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bpo-40094: Add os.waitstatus_to_exitcode() (GH-19201)

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Add os.waitstatus_to_exitcode() function to convert a wait status to an
exitcode.

Suggest waitstatus_to_exitcode() usage in the documentation when
appropriate.

Use waitstatus_to_exitcode() in:

* multiprocessing, os, subprocess and _bootsubprocess modules;
* test.support.wait_process();
* setup.py: run_command();
* and many tests.
This commit is contained in:
Victor Stinner 2020-04-01 18:49:29 +02:00 • committed by GitHub
parent 5dd836030e
commit 65a796e527
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GPG key ID: 4AEE18F83AFDEB23
18 changed files with 258 additions and 61 deletions
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13
Lib/_bootsubprocess.py
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@ -6,15 +6,6 @@ subprocess is unavailable. setup.py is not used on Windows.
import os
def _waitstatus_to_exitcode(status):
if os.WIFEXITED(status):
return os.WEXITSTATUS(status)
elif os.WIFSIGNALED(status):
return -os.WTERMSIG(status)
else:
raise ValueError(f"invalid wait status: {status!r}")
# distutils.spawn used by distutils.command.build_ext
# calls subprocess.Popen().wait()
class Popen:
@ -37,7 +28,7 @@ class Popen:
else:
# Parent process
_, status = os.waitpid(pid, 0)
self.returncode = _waitstatus_to_exitcode(status)
self.returncode = os.waitstatus_to_exitcode(status)
return self.returncode
@ -87,7 +78,7 @@ def check_output(cmd, **kwargs):
try:
# system() spawns a shell
status = os.system(cmd)
exitcode = _waitstatus_to_exitcode(status)
exitcode = os.waitstatus_to_exitcode(status)
if exitcode:
raise ValueError(f"Command {cmd!r} returned non-zero "
f"exit status {exitcode!r}")