diff options
| -rw-r--r-- | Lib/gzip.py | 2 | ||||
| -rw-r--r-- | Lib/test/test_gzip.py | 7 | ||||
| -rw-r--r-- | Misc/NEWS | 3 |
3 files changed, 11 insertions, 1 deletions
diff --git a/Lib/gzip.py b/Lib/gzip.py index 8d21fe4..f934d4f 100644 --- a/Lib/gzip.py +++ b/Lib/gzip.py @@ -96,7 +96,7 @@ class _PaddedFile: self._read -= len(prepend) return else: - self._buffer = self._buffer[read:] + prepend + self._buffer = self._buffer[self._read:] + prepend self._length = len(self._buffer) self._read = 0 diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py index 5289407..b7a7e03 100644 --- a/Lib/test/test_gzip.py +++ b/Lib/test/test_gzip.py @@ -421,6 +421,13 @@ class TestGzip(BaseTest): with gzip.GzipFile(fileobj=io.BytesIO(gzdata)) as f: self.assertEqual(f.read(), b'Test') + def test_prepend_error(self): + # See issue #20875 + with gzip.open(self.filename, "wb") as f: + f.write(data1) + with gzip.open(self.filename, "rb") as f: + f.fileobj.prepend() + class TestOpen(BaseTest): def test_binary_modes(self): uncompressed = data1 * 50 @@ -20,6 +20,9 @@ Core and Builtins Library ------- +- Issue #20875: Prevent possible gzip "'read' is not defined" NameError. + Patch by Claudiu Popa. + - Issue #11558: ``email.message.Message.attach`` now returns a more useful error message if ``attach`` is called on a message for which ``is_multipart`` is False. |