"""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 ._abc import MultiMapping, MutableMultiMapping from ._compat import USE_EXTENSIONS __all__ = ( "MultiMapping", "MutableMultiMapping", "MultiDictProxy", "CIMultiDictProxy", "MultiDict", "CIMultiDict", "upstr", "istr", "getversion", ) __version__ = "6.0.4" try: if not USE_EXTENSIONS: raise ImportError from ._multidict import ( CIMultiDict, CIMultiDictProxy, MultiDict, MultiDictProxy, getversion, istr, ) except ImportError: # pragma: no cover from ._multidict_py import ( CIMultiDict, CIMultiDictProxy, MultiDict, MultiDictProxy, getversion, istr, ) upstr = istr