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| author | Chris Griffith <chris@cdgriffith.com> | 2021-03-11 13:43:29 -0600 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-03-11 11:43:29 -0800 |
| commit | b4fc44bb2d209182390b4f9fdf074a46b0165a2f (patch) | |
| tree | 91fce7c1d25326301e9433f8f15d9dadf97b1b72 /Lib/subprocess.py | |
| parent | 87f649a409da9d99682e78a55a83fc43225a8729 (diff) | |
| download | cpython-git-b4fc44bb2d209182390b4f9fdf074a46b0165a2f.tar.gz | |
bpo-43423 Fix IndexError in subprocess _communicate function (GH-24777)
Check to make sure stdout and stderr are not empty before selecting an item from them in Windows subprocess._communicate.
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Diffstat (limited to 'Lib/subprocess.py')
| -rw-r--r-- | Lib/subprocess.py | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/Lib/subprocess.py b/Lib/subprocess.py index e4ca5f500c..d375514b2d 100644 --- a/Lib/subprocess.py +++ b/Lib/subprocess.py @@ -1535,10 +1535,8 @@ class Popen(object): self.stderr.close() # All data exchanged. Translate lists into strings. - if stdout is not None: - stdout = stdout[0] - if stderr is not None: - stderr = stderr[0] + stdout = stdout[0] if stdout else None + stderr = stderr[0] if stderr else None return (stdout, stderr) |