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| author | Berker Peksag <berker.peksag@gmail.com> | 2020-02-21 17:57:26 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-02-21 17:57:26 (GMT) |
| commit | fd5116c0e77aec05f67fb24f10562ac920648035 (patch) | |
| tree | e980fc8e6aa1ed8d62312fb17dbf01935c1e6e04 /Lib/_pyio.py | |
| parent | d4d17fd2cf69e7c8f4cd03fbf2d575370945b952 (diff) | |
| download | cpython-fd5116c0e77aec05f67fb24f10562ac920648035.zip cpython-fd5116c0e77aec05f67fb24f10562ac920648035.tar.gz cpython-fd5116c0e77aec05f67fb24f10562ac920648035.tar.bz2 | |
bpo-35950: Raise UnsupportedOperation in BufferedReader.truncate() (GH-18586)
The truncate() method of io.BufferedReader() should raise
UnsupportedOperation when it is called on a read-only
io.BufferedReader() instance.
https://bugs.python.org/issue35950
Automerge-Triggered-By: @methane
Diffstat (limited to 'Lib/_pyio.py')
| -rw-r--r-- | Lib/_pyio.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/_pyio.py b/Lib/_pyio.py index 4c24146..8eaa114 100644 --- a/Lib/_pyio.py +++ b/Lib/_pyio.py @@ -792,6 +792,9 @@ class _BufferedIOMixin(BufferedIOBase): return pos def truncate(self, pos=None): + self._checkClosed() + self._checkWritable() + # Flush the stream. We're mixing buffered I/O with lower-level I/O, # and a flush may be necessary to synch both views of the current # file state. |