Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/requests/models.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 # -*- coding: utf-8 -*-
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2
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3 """
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4 requests.models
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5 ~~~~~~~~~~~~~~~
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6
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7 This module contains the primary objects that power Requests.
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8 """
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9
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10 import collections
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11 import datetime
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12
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13 from io import BytesIO, UnsupportedOperation
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14 from .hooks import default_hooks
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15 from .structures import CaseInsensitiveDict
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16
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17 from .auth import HTTPBasicAuth
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18 from .cookies import cookiejar_from_dict, get_cookie_header, _copy_cookie_jar
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19 from .packages.urllib3.fields import RequestField
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20 from .packages.urllib3.filepost import encode_multipart_formdata
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21 from .packages.urllib3.util import parse_url
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22 from .packages.urllib3.exceptions import (
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23 DecodeError, ReadTimeoutError, ProtocolError, LocationParseError)
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24 from .exceptions import (
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25 HTTPError, MissingSchema, InvalidURL, ChunkedEncodingError,
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26 ContentDecodingError, ConnectionError, StreamConsumedError)
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27 from .utils import (
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28 guess_filename, get_auth_from_url, requote_uri,
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29 stream_decode_response_unicode, to_key_val_list, parse_header_links,
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30 iter_slices, guess_json_utf, super_len, to_native_string)
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31 from .compat import (
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32 cookielib, urlunparse, urlsplit, urlencode, str, bytes, StringIO,
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33 is_py2, chardet, builtin_str, basestring)
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34 from .compat import json as complexjson
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35 from .status_codes import codes
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36
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37 #: The set of HTTP status codes that indicate an automatically
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38 #: processable redirect.
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39 REDIRECT_STATI = (
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40 codes.moved, # 301
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41 codes.found, # 302
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42 codes.other, # 303
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43 codes.temporary_redirect, # 307
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44 codes.permanent_redirect, # 308
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45 )
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46
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47 DEFAULT_REDIRECT_LIMIT = 30
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48 CONTENT_CHUNK_SIZE = 10 * 1024
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49 ITER_CHUNK_SIZE = 512
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50
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51
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52 class RequestEncodingMixin(object):
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53 @property
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54 def path_url(self):
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55 """Build the path URL to use."""
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56
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57 url = []
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58
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59 p = urlsplit(self.url)
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60
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61 path = p.path
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62 if not path:
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63 path = '/'
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64
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65 url.append(path)
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66
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67 query = p.query
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68 if query:
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69 url.append('?')
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70 url.append(query)
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71
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72 return ''.join(url)
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73
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74 @staticmethod
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75 def _encode_params(data):
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76 """Encode parameters in a piece of data.
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77
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78 Will successfully encode parameters when passed as a dict or a list of
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79 2-tuples. Order is retained if data is a list of 2-tuples but arbitrary
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80 if parameters are supplied as a dict.
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81 """
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82
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83 if isinstance(data, (str, bytes)):
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84 return data
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85 elif hasattr(data, 'read'):
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86 return data
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87 elif hasattr(data, '__iter__'):
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88 result = []
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89 for k, vs in to_key_val_list(data):
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90 if isinstance(vs, basestring) or not hasattr(vs, '__iter__'):
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91 vs = [vs]
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92 for v in vs:
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93 if v is not None:
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94 result.append(
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95 (k.encode('utf-8') if isinstance(k, str) else k,
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96 v.encode('utf-8') if isinstance(v, str) else v))
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97 return urlencode(result, doseq=True)
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98 else:
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99 return data
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100
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101 @staticmethod
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102 def _encode_files(files, data):
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103 """Build the body for a multipart/form-data request.
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104
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105 Will successfully encode files when passed as a dict or a list of
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106 2-tuples. Order is retained if data is a list of 2-tuples but arbitrary
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107 if parameters are supplied as a dict.
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108
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109 """
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110 if (not files):
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111 raise ValueError("Files must be provided.")
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112 elif isinstance(data, basestring):
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113 raise ValueError("Data must not be a string.")
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114
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115 new_fields = []
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116 fields = to_key_val_list(data or {})
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117 files = to_key_val_list(files or {})
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118
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119 for field, val in fields:
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120 if isinstance(val, basestring) or not hasattr(val, '__iter__'):
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121 val = [val]
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122 for v in val:
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123 if v is not None:
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124 # Don't call str() on bytestrings: in Py3 it all goes wrong.
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125 if not isinstance(v, bytes):
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126 v = str(v)
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127
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128 new_fields.append(
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129 (field.decode('utf-8') if isinstance(field, bytes) else field,
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130 v.encode('utf-8') if isinstance(v, str) else v))
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131
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132 for (k, v) in files:
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133 # support for explicit filename
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134 ft = None
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135 fh = None
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136 if isinstance(v, (tuple, list)):
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137 if len(v) == 2:
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138 fn, fp = v
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139 elif len(v) == 3:
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140 fn, fp, ft = v
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141 else:
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142 fn, fp, ft, fh = v
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143 else:
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144 fn = guess_filename(v) or k
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145 fp = v
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146
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147 if isinstance(fp, (str, bytes, bytearray)):
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148 fdata = fp
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149 else:
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150 fdata = fp.read()
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151
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152 rf = RequestField(name=k, data=fdata, filename=fn, headers=fh)
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153 rf.make_multipart(content_type=ft)
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154 new_fields.append(rf)
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155
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156 body, content_type = encode_multipart_formdata(new_fields)
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157
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158 return body, content_type
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159
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160
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161 class RequestHooksMixin(object):
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162 def register_hook(self, event, hook):
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163 """Properly register a hook."""
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164
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165 if event not in self.hooks:
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166 raise ValueError('Unsupported event specified, with event name "%s"' % (event))
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167
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168 if isinstance(hook, collections.Callable):
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169 self.hooks[event].append(hook)
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170 elif hasattr(hook, '__iter__'):
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171 self.hooks[event].extend(h for h in hook if isinstance(h, collections.Callable))
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172
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173 def deregister_hook(self, event, hook):
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174 """Deregister a previously registered hook.
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175 Returns True if the hook existed, False if not.
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176 """
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177
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178 try:
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179 self.hooks[event].remove(hook)
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180 return True
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181 except ValueError:
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182 return False
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183
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184
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185 class Request(RequestHooksMixin):
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186 """A user-created :class:`Request <Request>` object.
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187
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188 Used to prepare a :class:`PreparedRequest <PreparedRequest>`, which is sent to the server.
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189
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190 :param method: HTTP method to use.
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191 :param url: URL to send.
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192 :param headers: dictionary of headers to send.
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193 :param files: dictionary of {filename: fileobject} files to multipart upload.
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194 :param data: the body to attach to the request. If a dictionary is provided, form-encoding will take place.
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195 :param json: json for the body to attach to the request (if files or data is not specified).
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196 :param params: dictionary of URL parameters to append to the URL.
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197 :param auth: Auth handler or (user, pass) tuple.
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198 :param cookies: dictionary or CookieJar of cookies to attach to this request.
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199 :param hooks: dictionary of callback hooks, for internal usage.
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200
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201 Usage::
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202
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203 >>> import requests
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204 >>> req = requests.Request('GET', 'http://httpbin.org/get')
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205 >>> req.prepare()
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206 <PreparedRequest [GET]>
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207
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208 """
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209 def __init__(self, method=None, url=None, headers=None, files=None,
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210 data=None, params=None, auth=None, cookies=None, hooks=None, json=None):
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211
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212 # Default empty dicts for dict params.
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213 data = [] if data is None else data
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214 files = [] if files is None else files
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215 headers = {} if headers is None else headers
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216 params = {} if params is None else params
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217 hooks = {} if hooks is None else hooks
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218
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219 self.hooks = default_hooks()
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220 for (k, v) in list(hooks.items()):
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221 self.register_hook(event=k, hook=v)
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222
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223 self.method = method
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224 self.url = url
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225 self.headers = headers
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226 self.files = files
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227 self.data = data
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228 self.json = json
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229 self.params = params
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230 self.auth = auth
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231 self.cookies = cookies
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232
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233 def __repr__(self):
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234 return '<Request [%s]>' % (self.method)
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235
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236 def prepare(self):
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237 """Constructs a :class:`PreparedRequest <PreparedRequest>` for transmission and returns it."""
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238 p = PreparedRequest()
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239 p.prepare(
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240 method=self.method,
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241 url=self.url,
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242 headers=self.headers,
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243 files=self.files,
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244 data=self.data,
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245 json=self.json,
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246 params=self.params,
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247 auth=self.auth,
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248 cookies=self.cookies,
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249 hooks=self.hooks,
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250 )
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251 return p
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252
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253
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254 class PreparedRequest(RequestEncodingMixin, RequestHooksMixin):
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255 """The fully mutable :class:`PreparedRequest <PreparedRequest>` object,
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256 containing the exact bytes that will be sent to the server.
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257
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258 Generated from either a :class:`Request <Request>` object or manually.
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259
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260 Usage::
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261
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262 >>> import requests
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263 >>> req = requests.Request('GET', 'http://httpbin.org/get')
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264 >>> r = req.prepare()
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265 <PreparedRequest [GET]>
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266
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267 >>> s = requests.Session()
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268 >>> s.send(r)
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269 <Response [200]>
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270
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271 """
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272
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273 def __init__(self):
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274 #: HTTP verb to send to the server.
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275 self.method = None
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276 #: HTTP URL to send the request to.
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277 self.url = None
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278 #: dictionary of HTTP headers.
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279 self.headers = None
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280 # The `CookieJar` used to create the Cookie header will be stored here
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281 # after prepare_cookies is called
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282 self._cookies = None
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283 #: request body to send to the server.
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284 self.body = None
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285 #: dictionary of callback hooks, for internal usage.
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286 self.hooks = default_hooks()
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287
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288 def prepare(self, method=None, url=None, headers=None, files=None,
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289 data=None, params=None, auth=None, cookies=None, hooks=None, json=None):
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290 """Prepares the entire request with the given parameters."""
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291
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292 self.prepare_method(method)
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293 self.prepare_url(url, params)
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294 self.prepare_headers(headers)
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295 self.prepare_cookies(cookies)
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296 self.prepare_body(data, files, json)
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297 self.prepare_auth(auth, url)
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298
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299 # Note that prepare_auth must be last to enable authentication schemes
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300 # such as OAuth to work on a fully prepared request.
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301
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302 # This MUST go after prepare_auth. Authenticators could add a hook
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303 self.prepare_hooks(hooks)
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304
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305 def __repr__(self):
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306 return '<PreparedRequest [%s]>' % (self.method)
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307
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308 def copy(self):
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309 p = PreparedRequest()
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310 p.method = self.method
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311 p.url = self.url
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312 p.headers = self.headers.copy() if self.headers is not None else None
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313 p._cookies = _copy_cookie_jar(self._cookies)
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314 p.body = self.body
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315 p.hooks = self.hooks
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316 return p
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317
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318 def prepare_method(self, method):
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319 """Prepares the given HTTP method."""
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320 self.method = method
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321 if self.method is not None:
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322 self.method = self.method.upper()
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323
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324 def prepare_url(self, url, params):
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325 """Prepares the given HTTP URL."""
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326 #: Accept objects that have string representations.
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327 #: We're unable to blindy call unicode/str functions
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328 #: as this will include the bytestring indicator (b'')
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329 #: on python 3.x.
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330 #: https://github.com/kennethreitz/requests/pull/2238
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331 if isinstance(url, bytes):
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332 url = url.decode('utf8')
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333 else:
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334 url = unicode(url) if is_py2 else str(url)
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335
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336 # Don't do any URL preparation for non-HTTP schemes like `mailto`,
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337 # `data` etc to work around exceptions from `url_parse`, which
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338 # handles RFC 3986 only.
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339 if ':' in url and not url.lower().startswith('http'):
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340 self.url = url
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341 return
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342
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343 # Support for unicode domain names and paths.
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344 try:
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345 scheme, auth, host, port, path, query, fragment = parse_url(url)
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346 except LocationParseError as e:
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347 raise InvalidURL(*e.args)
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348
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349 if not scheme:
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350 error = ("Invalid URL {0!r}: No schema supplied. Perhaps you meant http://{0}?")
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351 error = error.format(to_native_string(url, 'utf8'))
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352
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353 raise MissingSchema(error)
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354
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355 if not host:
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356 raise InvalidURL("Invalid URL %r: No host supplied" % url)
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357
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358 # Only want to apply IDNA to the hostname
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359 try:
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360 host = host.encode('idna').decode('utf-8')
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361 except UnicodeError:
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362 raise InvalidURL('URL has an invalid label.')
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363
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364 # Carefully reconstruct the network location
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365 netloc = auth or ''
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366 if netloc:
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367 netloc += '@'
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368 netloc += host
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369 if port:
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370 netloc += ':' + str(port)
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371
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372 # Bare domains aren't valid URLs.
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373 if not path:
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374 path = '/'
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375
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376 if is_py2:
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377 if isinstance(scheme, str):
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378 scheme = scheme.encode('utf-8')
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379 if isinstance(netloc, str):
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380 netloc = netloc.encode('utf-8')
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381 if isinstance(path, str):
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382 path = path.encode('utf-8')
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383 if isinstance(query, str):
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384 query = query.encode('utf-8')
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385 if isinstance(fragment, str):
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386 fragment = fragment.encode('utf-8')
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387
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388 enc_params = self._encode_params(params)
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389 if enc_params:
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390 if query:
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391 query = '%s&%s' % (query, enc_params)
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392 else:
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393 query = enc_params
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394
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395 url = requote_uri(urlunparse([scheme, netloc, path, None, query, fragment]))
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396 self.url = url
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397
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398 def prepare_headers(self, headers):
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399 """Prepares the given HTTP headers."""
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400
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401 if headers:
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402 self.headers = CaseInsensitiveDict((to_native_string(name), value) for name, value in headers.items())
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403 else:
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404 self.headers = CaseInsensitiveDict()
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405
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406 def prepare_body(self, data, files, json=None):
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407 """Prepares the given HTTP body data."""
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408
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409 # Check if file, fo, generator, iterator.
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410 # If not, run through normal process.
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411
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412 # Nottin' on you.
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413 body = None
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414 content_type = None
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415 length = None
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416
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417 if data == {} and json is not None:
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418 content_type = 'application/json'
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419 body = complexjson.dumps(json)
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420
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421 is_stream = all([
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422 hasattr(data, '__iter__'),
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423 not isinstance(data, (basestring, list, tuple, dict))
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424 ])
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425
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426 try:
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427 length = super_len(data)
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428 except (TypeError, AttributeError, UnsupportedOperation):
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429 length = None
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430
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431 if is_stream:
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432 body = data
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433
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434 if files:
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435 raise NotImplementedError('Streamed bodies and files are mutually exclusive.')
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436
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437 if length is not None:
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438 self.headers['Content-Length'] = builtin_str(length)
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439 else:
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440 self.headers['Transfer-Encoding'] = 'chunked'
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441 else:
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442 # Multi-part file uploads.
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443 if files:
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444 (body, content_type) = self._encode_files(files, data)
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445 else:
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446 if data:
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447 body = self._encode_params(data)
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448 if isinstance(data, basestring) or hasattr(data, 'read'):
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449 content_type = None
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450 else:
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451 content_type = 'application/x-www-form-urlencoded'
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452
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453 self.prepare_content_length(body)
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454
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455 # Add content-type if it wasn't explicitly provided.
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456 if content_type and ('content-type' not in self.headers):
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457 self.headers['Content-Type'] = content_type
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458
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459 self.body = body
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460
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461 def prepare_content_length(self, body):
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462 if hasattr(body, 'seek') and hasattr(body, 'tell'):
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463 body.seek(0, 2)
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464 self.headers['Content-Length'] = builtin_str(body.tell())
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465 body.seek(0, 0)
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466 elif body is not None:
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467 l = super_len(body)
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468 if l:
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469 self.headers['Content-Length'] = builtin_str(l)
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470 elif (self.method not in ('GET', 'HEAD')) and (self.headers.get('Content-Length') is None):
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471 self.headers['Content-Length'] = '0'
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472
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473 def prepare_auth(self, auth, url=''):
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474 """Prepares the given HTTP auth data."""
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475
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476 # If no Auth is explicitly provided, extract it from the URL first.
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477 if auth is None:
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478 url_auth = get_auth_from_url(self.url)
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479 auth = url_auth if any(url_auth) else None
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480
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481 if auth:
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482 if isinstance(auth, tuple) and len(auth) == 2:
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483 # special-case basic HTTP auth
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484 auth = HTTPBasicAuth(*auth)
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485
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486 # Allow auth to make its changes.
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487 r = auth(self)
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488
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489 # Update self to reflect the auth changes.
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490 self.__dict__.update(r.__dict__)
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491
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492 # Recompute Content-Length
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493 self.prepare_content_length(self.body)
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494
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495 def prepare_cookies(self, cookies):
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496 """Prepares the given HTTP cookie data.
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497
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498 This function eventually generates a ``Cookie`` header from the
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499 given cookies using cookielib. Due to cookielib's design, the header
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500 will not be regenerated if it already exists, meaning this function
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501 can only be called once for the life of the
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502 :class:`PreparedRequest <PreparedRequest>` object. Any subsequent calls
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503 to ``prepare_cookies`` will have no actual effect, unless the "Cookie"
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504 header is removed beforehand."""
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505
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506 if isinstance(cookies, cookielib.CookieJar):
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507 self._cookies = cookies
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508 else:
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509 self._cookies = cookiejar_from_dict(cookies)
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510
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511 cookie_header = get_cookie_header(self._cookies, self)
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512 if cookie_header is not None:
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513 self.headers['Cookie'] = cookie_header
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514
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515 def prepare_hooks(self, hooks):
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516 """Prepares the given hooks."""
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517 # hooks can be passed as None to the prepare method and to this
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518 # method. To prevent iterating over None, simply use an empty list
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519 # if hooks is False-y
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520 hooks = hooks or []
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521 for event in hooks:
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522 self.register_hook(event, hooks[event])
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523
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524
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525 class Response(object):
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526 """The :class:`Response <Response>` object, which contains a
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527 server's response to an HTTP request.
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528 """
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529
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530 __attrs__ = [
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531 '_content', 'status_code', 'headers', 'url', 'history',
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532 'encoding', 'reason', 'cookies', 'elapsed', 'request'
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533 ]
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534
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535 def __init__(self):
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536 super(Response, self).__init__()
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537
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538 self._content = False
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539 self._content_consumed = False
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540
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541 #: Integer Code of responded HTTP Status, e.g. 404 or 200.
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542 self.status_code = None
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543
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544 #: Case-insensitive Dictionary of Response Headers.
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545 #: For example, ``headers['content-encoding']`` will return the
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546 #: value of a ``'Content-Encoding'`` response header.
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547 self.headers = CaseInsensitiveDict()
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548
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549 #: File-like object representation of response (for advanced usage).
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550 #: Use of ``raw`` requires that ``stream=True`` be set on the request.
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551 # This requirement does not apply for use internally to Requests.
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552 self.raw = None
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553
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554 #: Final URL location of Response.
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555 self.url = None
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556
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557 #: Encoding to decode with when accessing r.text.
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558 self.encoding = None
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559
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560 #: A list of :class:`Response <Response>` objects from
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561 #: the history of the Request. Any redirect responses will end
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562 #: up here. The list is sorted from the oldest to the most recent request.
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563 self.history = []
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564
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565 #: Textual reason of responded HTTP Status, e.g. "Not Found" or "OK".
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566 self.reason = None
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567
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568 #: A CookieJar of Cookies the server sent back.
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569 self.cookies = cookiejar_from_dict({})
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570
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571 #: The amount of time elapsed between sending the request
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572 #: and the arrival of the response (as a timedelta).
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573 #: This property specifically measures the time taken between sending
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574 #: the first byte of the request and finishing parsing the headers. It
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575 #: is therefore unaffected by consuming the response content or the
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576 #: value of the ``stream`` keyword argument.
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577 self.elapsed = datetime.timedelta(0)
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578
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579 #: The :class:`PreparedRequest <PreparedRequest>` object to which this
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580 #: is a response.
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581 self.request = None
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582
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583 def __getstate__(self):
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584 # Consume everything; accessing the content attribute makes
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585 # sure the content has been fully read.
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586 if not self._content_consumed:
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587 self.content
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588
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589 return dict(
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590 (attr, getattr(self, attr, None))
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591 for attr in self.__attrs__
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592 )
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593
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594 def __setstate__(self, state):
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595 for name, value in state.items():
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596 setattr(self, name, value)
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597
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598 # pickled objects do not have .raw
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599 setattr(self, '_content_consumed', True)
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600 setattr(self, 'raw', None)
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601
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602 def __repr__(self):
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603 return '<Response [%s]>' % (self.status_code)
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604
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605 def __bool__(self):
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606 """Returns true if :attr:`status_code` is 'OK'."""
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607 return self.ok
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608
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609 def __nonzero__(self):
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610 """Returns true if :attr:`status_code` is 'OK'."""
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611 return self.ok
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612
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613 def __iter__(self):
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614 """Allows you to use a response as an iterator."""
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615 return self.iter_content(128)
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616
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617 @property
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618 def ok(self):
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619 try:
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620 self.raise_for_status()
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621 except HTTPError:
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622 return False
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623 return True
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624
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625 @property
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626 def is_redirect(self):
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627 """True if this Response is a well-formed HTTP redirect that could have
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628 been processed automatically (by :meth:`Session.resolve_redirects`).
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629 """
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630 return ('location' in self.headers and self.status_code in REDIRECT_STATI)
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631
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632 @property
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633 def is_permanent_redirect(self):
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634 """True if this Response one of the permanant versions of redirect"""
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635 return ('location' in self.headers and self.status_code in (codes.moved_permanently, codes.permanent_redirect))
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636
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637 @property
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638 def apparent_encoding(self):
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639 """The apparent encoding, provided by the chardet library"""
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bcclaywell
parents:
diff changeset
640 return chardet.detect(self.content)['encoding']
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bcclaywell
parents:
diff changeset
641
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bcclaywell
parents:
diff changeset
642 def iter_content(self, chunk_size=1, decode_unicode=False):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
643 """Iterates over the response data. When stream=True is set on the
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
644 request, this avoids reading the content at once into memory for
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
645 large responses. The chunk size is the number of bytes it should
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
646 read into memory. This is not necessarily the length of each item
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
647 returned as decoding can take place.
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bcclaywell
parents:
diff changeset
648
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
649 If decode_unicode is True, content will be decoded using the best
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
650 available encoding based on the response.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
651 """
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bcclaywell
parents:
diff changeset
652
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
653 def generate():
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
654 # Special case for urllib3.
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bcclaywell
parents:
diff changeset
655 if hasattr(self.raw, 'stream'):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
656 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
657 for chunk in self.raw.stream(chunk_size, decode_content=True):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
658 yield chunk
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
659 except ProtocolError as e:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
660 raise ChunkedEncodingError(e)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
661 except DecodeError as e:
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bcclaywell
parents:
diff changeset
662 raise ContentDecodingError(e)
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bcclaywell
parents:
diff changeset
663 except ReadTimeoutError as e:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
664 raise ConnectionError(e)
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bcclaywell
parents:
diff changeset
665 else:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
666 # Standard file-like object.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
667 while True:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
668 chunk = self.raw.read(chunk_size)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
669 if not chunk:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
670 break
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
671 yield chunk
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
672
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
673 self._content_consumed = True
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bcclaywell
parents:
diff changeset
674
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bcclaywell
parents:
diff changeset
675 if self._content_consumed and isinstance(self._content, bool):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
676 raise StreamConsumedError()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
677 # simulate reading small chunks of the content
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
678 reused_chunks = iter_slices(self._content, chunk_size)
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bcclaywell
parents:
diff changeset
679
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bcclaywell
parents:
diff changeset
680 stream_chunks = generate()
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bcclaywell
parents:
diff changeset
681
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
682 chunks = reused_chunks if self._content_consumed else stream_chunks
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
683
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
684 if decode_unicode:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
685 chunks = stream_decode_response_unicode(chunks, self)
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bcclaywell
parents:
diff changeset
686
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bcclaywell
parents:
diff changeset
687 return chunks
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bcclaywell
parents:
diff changeset
688
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
689 def iter_lines(self, chunk_size=ITER_CHUNK_SIZE, decode_unicode=None, delimiter=None):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
690 """Iterates over the response data, one line at a time. When
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
691 stream=True is set on the request, this avoids reading the
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
692 content at once into memory for large responses.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
693
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
694 .. note:: This method is not reentrant safe.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
695 """
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bcclaywell
parents:
diff changeset
696
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
697 pending = None
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
698
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
699 for chunk in self.iter_content(chunk_size=chunk_size, decode_unicode=decode_unicode):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
700
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
701 if pending is not None:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
702 chunk = pending + chunk
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
703
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
704 if delimiter:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
705 lines = chunk.split(delimiter)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
706 else:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
707 lines = chunk.splitlines()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
708
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
709 if lines and lines[-1] and chunk and lines[-1][-1] == chunk[-1]:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
710 pending = lines.pop()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
711 else:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
712 pending = None
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
713
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
714 for line in lines:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
715 yield line
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
716
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
717 if pending is not None:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
718 yield pending
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
719
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
720 @property
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
721 def content(self):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
722 """Content of the response, in bytes."""
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
723
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
724 if self._content is False:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
725 # Read the contents.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
726 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
727 if self._content_consumed:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
728 raise RuntimeError(
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
729 'The content for this response was already consumed')
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
730
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
731 if self.status_code == 0:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
732 self._content = None
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
733 else:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
734 self._content = bytes().join(self.iter_content(CONTENT_CHUNK_SIZE)) or bytes()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
735
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
736 except AttributeError:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
737 self._content = None
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
738
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
739 self._content_consumed = True
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
740 # don't need to release the connection; that's been handled by urllib3
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
741 # since we exhausted the data.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
742 return self._content
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
743
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
744 @property
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
745 def text(self):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
746 """Content of the response, in unicode.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
747
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
748 If Response.encoding is None, encoding will be guessed using
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
749 ``chardet``.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
750
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
751 The encoding of the response content is determined based solely on HTTP
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
752 headers, following RFC 2616 to the letter. If you can take advantage of
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
753 non-HTTP knowledge to make a better guess at the encoding, you should
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
754 set ``r.encoding`` appropriately before accessing this property.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
755 """
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
756
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
757 # Try charset from content-type
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
758 content = None
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
759 encoding = self.encoding
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
760
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
761 if not self.content:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
762 return str('')
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
763
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
764 # Fallback to auto-detected encoding.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
765 if self.encoding is None:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
766 encoding = self.apparent_encoding
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
767
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
768 # Decode unicode from given encoding.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
769 try:
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bcclaywell
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770 content = str(self.content, encoding, errors='replace')
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771 except (LookupError, TypeError):
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772 # A LookupError is raised if the encoding was not found which could
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773 # indicate a misspelling or similar mistake.
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774 #
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775 # A TypeError can be raised if encoding is None
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776 #
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777 # So we try blindly encoding.
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778 content = str(self.content, errors='replace')
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779
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780 return content
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781
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782 def json(self, **kwargs):
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783 """Returns the json-encoded content of a response, if any.
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784
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785 :param \*\*kwargs: Optional arguments that ``json.loads`` takes.
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786 """
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787
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788 if not self.encoding and len(self.content) > 3:
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789 # No encoding set. JSON RFC 4627 section 3 states we should expect
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790 # UTF-8, -16 or -32. Detect which one to use; If the detection or
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791 # decoding fails, fall back to `self.text` (using chardet to make
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792 # a best guess).
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793 encoding = guess_json_utf(self.content)
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794 if encoding is not None:
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795 try:
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796 return complexjson.loads(
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797 self.content.decode(encoding), **kwargs
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798 )
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799 except UnicodeDecodeError:
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800 # Wrong UTF codec detected; usually because it's not UTF-8
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801 # but some other 8-bit codec. This is an RFC violation,
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802 # and the server didn't bother to tell us what codec *was*
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803 # used.
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804 pass
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805 return complexjson.loads(self.text, **kwargs)
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806
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807 @property
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808 def links(self):
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809 """Returns the parsed header links of the response, if any."""
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810
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811 header = self.headers.get('link')
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812
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813 # l = MultiDict()
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814 l = {}
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815
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816 if header:
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817 links = parse_header_links(header)
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818
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819 for link in links:
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820 key = link.get('rel') or link.get('url')
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821 l[key] = link
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822
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823 return l
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824
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825 def raise_for_status(self):
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826 """Raises stored :class:`HTTPError`, if one occurred."""
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827
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828 http_error_msg = ''
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829
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830 if 400 <= self.status_code < 500:
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831 http_error_msg = '%s Client Error: %s for url: %s' % (self.status_code, self.reason, self.url)
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832
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833 elif 500 <= self.status_code < 600:
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834 http_error_msg = '%s Server Error: %s for url: %s' % (self.status_code, self.reason, self.url)
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835
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836 if http_error_msg:
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837 raise HTTPError(http_error_msg, response=self)
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838
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839 def close(self):
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840 """Releases the connection back to the pool. Once this method has been
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841 called the underlying ``raw`` object must not be accessed again.
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842
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843 *Note: Should not normally need to be called explicitly.*
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844 """
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845 if not self._content_consumed:
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846 return self.raw.close()
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847
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848 return self.raw.release_conn()