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# Copyright (C) 2005-2022 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: https://www.opensource.org/licenses/mit-license.php
# mypy: ignore-errors
import os
import typing
def _import_cy_extensions():
# all cython extension extension modules are treated as optional by the
# setup, so to ensure that all are compiled, all should be imported here
from ..cyextension import collections
from ..cyextension import immutabledict
from ..cyextension import processors
from ..cyextension import resultproxy
from ..cyextension import util
return (collections, immutabledict, processors, resultproxy, util)
if not typing.TYPE_CHECKING:
if os.environ.get("DISABLE_SQLALCHEMY_CEXT_RUNTIME"):
HAS_CYEXTENSION = False
else:
try:
_import_cy_extensions()
except ImportError:
HAS_CYEXTENSION = False
else:
HAS_CYEXTENSION = True
else:
HAS_CYEXTENSION = False
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