STINNER Victor <victor.stin...@haypocalc.com> added the comment:
> 3) Fall back to the original ".tmp" suffix (with the risk
> of stale tmp file).
I missed something, what is the "stale tmp file" issue? Python/import.c uses:
(void) unlink(filename);
fd = open(filename, O_EXCL|O_CREAT|O_WRONLY|O_TRUNC ...);
So Python starts by removing the .tmp file, but it fails if another process is
already writing into the .tmp file. In this case, we do nothing, which is not a
problem: the other process will create the file.
Attached patch implements the same algorithm than import.c in importlib.
----------
Added file: http://bugs.python.org/file23597/importlib_write_atomic.patch
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<http://bugs.python.org/issue13303>
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