mirror of https://github.com/pypa/pip
Move utils.misc.cast to avoid circular import
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parent
0339983b0f
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@ -13,8 +13,7 @@ from pip._vendor.retrying import retry # type: ignore
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from pip._vendor.six import PY2
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from pip._internal.utils.compat import get_path_uid
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from pip._internal.utils.misc import cast
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING, cast
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if MYPY_CHECK_RUNNING:
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from typing import BinaryIO, Iterator
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@ -39,7 +39,7 @@ from pip._internal.utils.compat import (
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str_to_display,
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)
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from pip._internal.utils.marker_files import write_delete_marker_file
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING, cast
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from pip._internal.utils.virtualenv import (
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running_under_virtualenv,
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virtualenv_no_global,
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@ -53,16 +53,11 @@ else:
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if MYPY_CHECK_RUNNING:
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from typing import (
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Any, AnyStr, Container, Iterable, List, Optional, Text,
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Tuple, Union, cast,
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Tuple, Union,
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)
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from pip._vendor.pkg_resources import Distribution
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VersionInfo = Tuple[int, int, int]
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else:
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# typing's cast() is needed at runtime, but we don't want to import typing.
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# Thus, we use a dummy no-op version, which we tell mypy to ignore.
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def cast(type_, value): # type: ignore
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return value
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__all__ = ['rmtree', 'display_path', 'backup_dir',
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@ -27,3 +27,12 @@ Ref: https://github.com/python/mypy/issues/3216
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"""
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MYPY_CHECK_RUNNING = False
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if MYPY_CHECK_RUNNING:
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from typing import cast
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else:
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# typing's cast() is needed at runtime, but we don't want to import typing.
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# Thus, we use a dummy no-op version, which we tell mypy to ignore.
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def cast(type_, value): # type: ignore
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return value
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