pip error:ImportError: cannot import name main when running pip --version command in windows7 32 bit

The bug is found in pip 10.0.0.

In linux you need to modify file: /usr/bin/pip from:

from pip import main

if __name__ == '__main__':
    sys.exit(main())

to this:

from pip import __main__
if __name__ == '__main__':
    sys.exit(__main__._main())

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