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"""
A facade for either :mod:`unittest.mock` or its `rolling backport`__, if it is
installed, with a preference for the latter as it may well have newer functionality
and bugfixes.
The facade also contains any bugfixes that are critical to the operation of
functionality provided by testfixtures.
__ https://mock.readthedocs.io
"""
import sys
backport_version: tuple[int, int, int] | None
try:
from mock import *
from mock.mock import _Call, _Sentinel
from mock.mock import call as mock_call
from mock import version_info as backport_version
except ImportError:
backport_version = None
class MockCall:
pass
mock_call = MockCall() # type: ignore[assignment]
from unittest.mock import * # type: ignore[assignment]
from unittest.mock import _Call, _Sentinel # type: ignore[assignment]
has_backport = backport_version is not None
if not (
(has_backport and backport_version[:3] > (2, 0, 0)) or # type: ignore[index]
(sys.version_info < (3, 0, 0) and not has_backport) or
(3, 6, 7) < sys.version_info[:3] < (3, 7, 0) or
sys.version_info[:3] > (3, 7, 1)
): # pragma: no cover
raise ImportError('Please upgrade Python (you have {}) or Mock Backport (You have {})'.format(
sys.version_info, backport_version
))
parent_name = '_mock_parent'
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