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gh-57684: Add -P cmdline option and PYTHONSAFEPATH env var (#31542)

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Add the -P command line option and the PYTHONSAFEPATH environment
variable to not prepend a potentially unsafe path to sys.path.

* Add sys.flags.safe_path flag.
* Add PyConfig.safe_path member.
* Programs/_bootstrap_python.c uses config.safe_path=0.
* Update subprocess._optim_args_from_interpreter_flags() to handle
  the -P command line option.
* Modules/getpath.py sets safe_path to 1 if a "._pth" file is
  present.
This commit is contained in:
Victor Stinner 2022-05-06 01:34:11 +02:00 • committed by GitHub
parent f6dd14c653
commit ada8b6d1b1
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20 changed files with 174 additions and 35 deletions
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4
Lib/test/test_support.py
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@ -522,6 +522,7 @@ class TestSupport(unittest.TestCase):
['-E'],
['-v'],
['-b'],
['-P'],
['-q'],
['-I'],
# same option multiple times
@ -541,7 +542,8 @@ class TestSupport(unittest.TestCase):
with self.subTest(opts=opts):
self.check_options(opts, 'args_from_interpreter_flags')
self.check_options(['-I', '-E', '-s'], 'args_from_interpreter_flags',
self.check_options(['-I', '-E', '-s', '-P'],
'args_from_interpreter_flags',
['-I'])
def test_optim_args_from_interpreter_flags(self):