Atsuo Ishimoto <ishim...@gembook.org> added the comment:

Patch updated.

- SameFileError is now derived from EnvironmentError.
- Fixed documentation.
- Fixed test method name.

I investigated this patch:

- shutil.copyfile() and shutil.copy() raises SameFileError if source and 
destination are same file.

- shutil.move() never raises SameFileError. shutil.move() may raise exception 
if source and dest are same file, but it depends on underlying implementation 
of platform. Linux and Windows don't raise exception in this case.

- I am opposed to change shutil.move() to raise SameFileError, because such 
incompatible change can break existing applilcations.

----------
Added file: http://bugs.python.org/file26401/issue1492704_new_2.patch

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