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gh-98360: multiprocessing now spawns children on Windows with correct argv[0] in virtual environments (GH-98462)

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Steve Dower 2022-10-20 14:53:38 +01:00 • committed by GitHub
parent cb93b4aee5
commit e48f9b2b7e
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4 changed files with 62 additions and 3 deletions
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5
Lib/multiprocessing/popen_spawn_win32.py
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@ -54,19 +54,20 @@ def __init__(self, process_obj):
wfd = msvcrt.open_osfhandle(whandle, 0)
cmd = spawn.get_command_line(parent_pid=os.getpid(),
pipe_handle=rhandle)
cmd = ' '.join('"%s"' % x for x in cmd)
python_exe = spawn.get_executable()
# bpo-35797: When running in a venv, we bypass the redirect
# executor and launch our base Python.
if WINENV and _path_eq(python_exe, sys.executable):
python_exe = sys._base_executable
cmd[0] = python_exe = sys._base_executable
env = os.environ.copy()
env["__PYVENV_LAUNCHER__"] = sys.executable
else:
env = None
cmd = ' '.join('"%s"' % x for x in cmd)
with open(wfd, 'wb', closefd=True) as to_child:
# start process
try: