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# -*- coding: utf-8 -*-
"""
requests.structures
~~~~~~~~~~~~~~~~~~~
Data structures that power Requests.
"""
class CaseInsensitiveDict(dict):
"""Case-insensitive Dictionary
For example, ``headers['content-encoding']`` will return the
value of a ``'Content-Encoding'`` response header."""
@property
def lower_keys(self):
if not hasattr(self, '_lower_keys') or not self._lower_keys:
self._lower_keys = dict((k.lower(), k) for k in list(self.keys()))
return self._lower_keys
def _clear_lower_keys(self):
if hasattr(self, '_lower_keys'):
self._lower_keys.clear()
def __setitem__(self, key, value):
dict.__setitem__(self, key, value)
self._clear_lower_keys()
def __delitem__(self, key):
dict.__delitem__(self, self.lower_keys.get(key.lower(), key))
self._lower_keys.clear()
def __contains__(self, key):
return key.lower() in self.lower_keys
def __getitem__(self, key):
# We allow fall-through here, so values default to None
if key in self:
return dict.__getitem__(self, self.lower_keys[key.lower()])
def get(self, key, default=None):
if key in self:
return self[key]
else:
return default
class LookupDict(dict):
"""Dictionary lookup object."""
def __init__(self, name=None):
self.name = name
super(LookupDict, self).__init__()
def __repr__(self):
return '<lookup \'%s\'>' % (self.name)
def __getitem__(self, key):
# We allow fall-through here, so values default to None
return self.__dict__.get(key, None)
def get(self, key, default=None):
return self.__dict__.get(key, default)
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