diff options
Diffstat (limited to 'Lib/importlib/_bootstrap_external.py')
| -rw-r--r-- | Lib/importlib/_bootstrap_external.py | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py index 1b76328429f..fa361597118 100644 --- a/Lib/importlib/_bootstrap_external.py +++ b/Lib/importlib/_bootstrap_external.py @@ -209,7 +209,11 @@ def _write_atomic(path, data, mode=0o666): # We first write data to a temporary file, and then use os.replace() to # perform an atomic rename. with _io.FileIO(fd, 'wb') as file: - file.write(data) + bytes_written = file.write(data) + if bytes_written != len(data): + # Raise an OSError so the 'except' below cleans up the partially + # written file. + raise OSError("os.write() didn't write the full pyc file") _os.replace(path_tmp, path) except OSError: try: |