when filename or filepath contain whitespace, cause error.

[liuyang1]

Usage: autopep8 [options] [filename [filename ...]]
Use filename '-' for stdin.

autopep8: error: autopep8 only takes one filename as argument unless the "--in-place" or "--diff" options are used
[Errno 2] No such file or directory: u'git/hub/Projects/Classic'
[Errno 2] No such file or directory: u'Algorithms/sieve.py

[liuyang1]

I fix this problem.