"""Multidict implementation.
HTTP Headers and URL query string require specific data structure:
multidict. It behaves mostly like a dict but it can have
several values for the same key.
"""
from ._compat import USE_CYTHON_EXTENSIONS
__all__ = ('MultiMapping', 'MutableMultiMapping',
'MultiDictProxy', 'CIMultiDictProxy',
'MultiDict', 'CIMultiDict', 'upstr', 'istr')
__version__ = '4.1.0'
from ._abc import MultiMapping, MutableMultiMapping
try:
if not USE_CYTHON_EXTENSIONS:
raise ImportError
from ._multidict import (MultiDictProxy,
CIMultiDictProxy,
MultiDict,
CIMultiDict,
upstr, istr)
except ImportError: # pragma: no cover
from ._multidict_py import (MultiDictProxy,
CIMultiDictProxy,
MultiDict,
CIMultiDict,
upstr, istr)