Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/UserDict.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 """A more or less complete user-defined wrapper around dictionary objects."""
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2
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3 class UserDict:
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4 def __init__(self, dict=None, **kwargs):
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5 self.data = {}
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6 if dict is not None:
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7 self.update(dict)
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8 if len(kwargs):
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9 self.update(kwargs)
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10 def __repr__(self): return repr(self.data)
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11 def __cmp__(self, dict):
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12 if isinstance(dict, UserDict):
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13 return cmp(self.data, dict.data)
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14 else:
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15 return cmp(self.data, dict)
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16 __hash__ = None # Avoid Py3k warning
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17 def __len__(self): return len(self.data)
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18 def __getitem__(self, key):
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19 if key in self.data:
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20 return self.data[key]
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21 if hasattr(self.__class__, "__missing__"):
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22 return self.__class__.__missing__(self, key)
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23 raise KeyError(key)
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24 def __setitem__(self, key, item): self.data[key] = item
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25 def __delitem__(self, key): del self.data[key]
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26 def clear(self): self.data.clear()
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27 def copy(self):
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28 if self.__class__ is UserDict:
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29 return UserDict(self.data.copy())
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30 import copy
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31 data = self.data
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32 try:
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33 self.data = {}
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34 c = copy.copy(self)
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35 finally:
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36 self.data = data
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37 c.update(self)
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38 return c
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39 def keys(self): return self.data.keys()
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40 def items(self): return self.data.items()
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41 def iteritems(self): return self.data.iteritems()
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42 def iterkeys(self): return self.data.iterkeys()
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43 def itervalues(self): return self.data.itervalues()
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44 def values(self): return self.data.values()
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45 def has_key(self, key): return key in self.data
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46 def update(self, dict=None, **kwargs):
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47 if dict is None:
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48 pass
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49 elif isinstance(dict, UserDict):
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50 self.data.update(dict.data)
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51 elif isinstance(dict, type({})) or not hasattr(dict, 'items'):
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52 self.data.update(dict)
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53 else:
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54 for k, v in dict.items():
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55 self[k] = v
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56 if len(kwargs):
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57 self.data.update(kwargs)
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58 def get(self, key, failobj=None):
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59 if key not in self:
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60 return failobj
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61 return self[key]
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62 def setdefault(self, key, failobj=None):
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63 if key not in self:
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64 self[key] = failobj
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65 return self[key]
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66 def pop(self, key, *args):
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67 return self.data.pop(key, *args)
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68 def popitem(self):
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69 return self.data.popitem()
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70 def __contains__(self, key):
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71 return key in self.data
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72 @classmethod
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73 def fromkeys(cls, iterable, value=None):
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74 d = cls()
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75 for key in iterable:
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76 d[key] = value
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77 return d
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78
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79 class IterableUserDict(UserDict):
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80 def __iter__(self):
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81 return iter(self.data)
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82
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83 import _abcoll
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84 _abcoll.MutableMapping.register(IterableUserDict)
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85
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86
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87 class DictMixin:
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88 # Mixin defining all dictionary methods for classes that already have
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89 # a minimum dictionary interface including getitem, setitem, delitem,
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90 # and keys. Without knowledge of the subclass constructor, the mixin
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91 # does not define __init__() or copy(). In addition to the four base
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92 # methods, progressively more efficiency comes with defining
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93 # __contains__(), __iter__(), and iteritems().
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94
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95 # second level definitions support higher levels
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96 def __iter__(self):
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97 for k in self.keys():
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98 yield k
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99 def has_key(self, key):
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100 try:
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101 self[key]
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102 except KeyError:
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103 return False
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104 return True
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105 def __contains__(self, key):
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106 return self.has_key(key)
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107
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108 # third level takes advantage of second level definitions
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109 def iteritems(self):
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110 for k in self:
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111 yield (k, self[k])
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112 def iterkeys(self):
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113 return self.__iter__()
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114
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115 # fourth level uses definitions from lower levels
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116 def itervalues(self):
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117 for _, v in self.iteritems():
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118 yield v
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119 def values(self):
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120 return [v for _, v in self.iteritems()]
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121 def items(self):
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122 return list(self.iteritems())
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123 def clear(self):
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124 for key in self.keys():
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125 del self[key]
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126 def setdefault(self, key, default=None):
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127 try:
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128 return self[key]
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129 except KeyError:
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130 self[key] = default
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131 return default
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132 def pop(self, key, *args):
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133 if len(args) > 1:
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134 raise TypeError, "pop expected at most 2 arguments, got "\
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135 + repr(1 + len(args))
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136 try:
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137 value = self[key]
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138 except KeyError:
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139 if args:
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140 return args[0]
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141 raise
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142 del self[key]
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143 return value
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144 def popitem(self):
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145 try:
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146 k, v = self.iteritems().next()
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147 except StopIteration:
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148 raise KeyError, 'container is empty'
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149 del self[k]
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150 return (k, v)
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151 def update(self, other=None, **kwargs):
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152 # Make progressively weaker assumptions about "other"
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153 if other is None:
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154 pass
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155 elif hasattr(other, 'iteritems'): # iteritems saves memory and lookups
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156 for k, v in other.iteritems():
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157 self[k] = v
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158 elif hasattr(other, 'keys'):
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159 for k in other.keys():
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160 self[k] = other[k]
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161 else:
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162 for k, v in other:
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163 self[k] = v
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164 if kwargs:
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165 self.update(kwargs)
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166 def get(self, key, default=None):
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167 try:
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168 return self[key]
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169 except KeyError:
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170 return default
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171 def __repr__(self):
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172 return repr(dict(self.iteritems()))
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173 def __cmp__(self, other):
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174 if other is None:
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175 return 1
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176 if isinstance(other, DictMixin):
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177 other = dict(other.iteritems())
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178 return cmp(dict(self.iteritems()), other)
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179 def __len__(self):
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180 return len(self.keys())