from collections import MutableMapping

from collections import Mapping

# CaseInsensitiveDict from requests that must be serializble.

class CaseInsensitiveDict(MutableMapping):

def __init__(self, data=None, **kwargs):

self._store = dict()

if data is None:

data = {}

self.update(data, **kwargs)

def __setitem__(self, key, value):

# Use the lowercased key for lookups, but store the actual

# key alongside the value.

self._store[key.lower()] = (key, value)

def __getitem__(self, key):

return self._store[key.lower()][1]

def __delitem__(self, key):

del self._store[key.lower()]

def __iter__(self):

return (casedkey for casedkey, mappedvalue in self._store.values())

def __len__(self):

return len(self._store)

def lower_items(self):

"""Like iteritems(), but with all lowercase keys."""

return (

(lowerkey, keyval[1])

for (lowerkey, keyval)

in self._store.items()

)

def __eq__(self, other):

if isinstance(other, Mapping):

other = CaseInsensitiveDict(other)

else:

return NotImplemented

# Compare insensitively

return dict(self.lower_items()) == dict(other.lower_items())

# Copy is required

def copy(self):

return CaseInsensitiveDict(self._store.values())

def __repr__(self):

return str(dict(self.items()))