Issue #13781: Fix GzipFile to work with os.fdopen()'d file objects.
diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py
index 573879e..a28cd34 100644
--- a/Lib/test/test_gzip.py
+++ b/Lib/test/test_gzip.py
@@ -274,6 +274,14 @@
d = f.read()
self.assertEqual(d, data1 * 50, "Incorrect data in file")
+ def test_fileobj_from_fdopen(self):
+ # Issue #13781: Creating a GzipFile using a fileobj from os.fdopen()
+ # should not embed the fake filename "<fdopen>" in the output file.
+ fd = os.open(self.filename, os.O_WRONLY | os.O_CREAT)
+ with os.fdopen(fd, "wb") as f:
+ with gzip.GzipFile(fileobj=f, mode="w") as g:
+ self.assertEqual(g.name, "")
+
def test_main(verbose=None):
test_support.run_unittest(TestGzip)