diff options
Diffstat (limited to 'Lib/zipfile.py')
| -rw-r--r-- | Lib/zipfile.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/zipfile.py b/Lib/zipfile.py index d7f5beba99..06eedec340 100644 --- a/Lib/zipfile.py +++ b/Lib/zipfile.py @@ -981,6 +981,8 @@ class _ZipWriteFile(io.BufferedIOBase): return True def write(self, data): + if self.closed: + raise ValueError('I/O operation on closed file.') nbytes = len(data) self._file_size += nbytes self._crc = crc32(data, self._crc) @@ -991,6 +993,8 @@ class _ZipWriteFile(io.BufferedIOBase): return nbytes def close(self): + if self.closed: + return super().close() # Flush any data from the compressor, and update header info if self._compressor: |