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authorMiss Islington (bot) <31488909+miss-islington@users.noreply.github.com>2021-02-26 01:13:17 (GMT)
committerGitHub <noreply@github.com>2021-02-26 01:13:17 (GMT)
commitadea9b86a97794ca75054603497c195d5ba39aa5 (patch)
treedc28422f69f4c7ad72d50909aa683a9d4a711b84
parentf82578ace103ec977cec3424b20e0b5f19cf720e (diff)
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bpo-43316: gzip: CLI uses non-zero return code on error. (GH-24647)
Exit code is now 1 instead of 0. A message is printed to stderr instead of stdout. This is the proper behaviour for a tool that can be used in scripts. (cherry picked from commit cc3df6368d4f3f6c9c9b716876c7e7b79c7abf3f) Co-authored-by: Ruben Vorderman <r.h.p.vorderman@lumc.nl>
-rw-r--r--Lib/gzip.py3
-rw-r--r--Lib/test/test_gzip.py8
-rw-r--r--Misc/NEWS.d/next/Library/2021-02-25-09-44-36.bpo-43316.k9Gyqn.rst3
3 files changed, 8 insertions, 6 deletions
diff --git a/Lib/gzip.py b/Lib/gzip.py
index e422773..8002b43 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -583,8 +583,7 @@ def main():
g = sys.stdout.buffer
else:
if arg[-3:] != ".gz":
- print("filename doesn't end in .gz:", repr(arg))
- continue
+ sys.exit("filename doesn't end in .gz:", repr(arg))
f = open(arg, "rb")
g = builtins.open(arg[:-3], "wb")
else:
diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py
index 0f235d1..66ae51a 100644
--- a/Lib/test/test_gzip.py
+++ b/Lib/test/test_gzip.py
@@ -772,10 +772,10 @@ class TestCommandLine(unittest.TestCase):
self.assertEqual(err, b'')
def test_decompress_infile_outfile_error(self):
- rc, out, err = assert_python_ok('-m', 'gzip', '-d', 'thisisatest.out')
- self.assertIn(b"filename doesn't end in .gz:", out)
- self.assertEqual(rc, 0)
- self.assertEqual(err, b'')
+ rc, out, err = assert_python_failure('-m', 'gzip', '-d', 'thisisatest.out')
+ self.assertIn(b"filename doesn't end in .gz:", err)
+ self.assertEqual(rc, 1)
+ self.assertEqual(out, b'')
@create_and_remove_directory(TEMPDIR)
def test_compress_stdin_outfile(self):
diff --git a/Misc/NEWS.d/next/Library/2021-02-25-09-44-36.bpo-43316.k9Gyqn.rst b/Misc/NEWS.d/next/Library/2021-02-25-09-44-36.bpo-43316.k9Gyqn.rst
new file mode 100644
index 0000000..1f0d3c4
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2021-02-25-09-44-36.bpo-43316.k9Gyqn.rst
@@ -0,0 +1,3 @@
+The ``python -m gzip`` command line application now properly fails when
+detecting an unsupported extension. It exits with a non-zero exit code and
+prints an error message to stderr.