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//opt/alt/python35/lib64/python3.5/site-packages/multidict/__init__.py

"""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)