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Thanks Amaury!
On to Georg for doc tweaks. Summary:
- all the os.path functions now work on bytes as well, on all platforms
- only on Unix (but not OSX) do we recommend using bytes
- os.getcwdu() no longer exists
- os.getcwdb() returns bytes
- os.listdir(<str>) skips undecodable entries (previously it returned a
mixture of str and bytes instances)
- open() accepts bytes as filename
Stuff that didn't change but that you might want to mention:
- all the syscalls in os support bytes args; readlink() and listdir()
return bytes if the arg is bytes
- getcwd() may raise UnicodeDecodeError
Martin already documented sys.setfilesystemencoding().