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"""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_CYTHON_EXTENSIONS
__all__ = (
"MultiMapping",
"MutableMultiMapping",
"MultiDictProxy",
"CIMultiDictProxy",
"MultiDict",
"CIMultiDict",
"upstr",
"istr",
"getversion",
)
__version__ = "5.1.0"
try:
if not USE_CYTHON_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