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/
lib
/
python3.8
/
site-packages
/
pip
/
_internal
/
cli
command_context.py
# The following comment should be removed at some point in the future. # mypy: disallow-untyped-defs=False from contextlib import contextmanager from pip._vendor.contextlib2 import ExitStack class CommandContextMixIn(object): def __init__(self): super(CommandContextMixIn, self).__init__() self._in_main_context = False self._main_context = ExitStack() @contextmanager def main_context(self): assert not self._in_main_context self._in_main_context = True try: with self._main_context: yield finally: self._in_main_context = False def enter_context(self, context_provider): assert self._in_main_context return self._main_context.enter_context(context_provider)
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