New submission from Nehal Patel <[email protected]>:
The following code produces incorrect behavior:
with gzip.open("foo.gz") as gz:
res = subprocess.run("cat", stdin=gz, capture_output=True)
the contents of res.stdout are identical to the contents of "foo.gz"
It seems the subprocess somehow gets a hold of the underlying file descriptor
pointing to the compressed file, and ends up being fed the compressed bytes.
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components: IO
messages: 370804
nosy: Nehal Patel
priority: normal
severity: normal
status: open
title: Cannot pipe GzipFile into subprocess
type: behavior
versions: Python 3.7
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Python tracker <[email protected]>
<https://bugs.python.org/issue40885>
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