#402 Fix flake8

[Chris Sewell]

./docutils/writers/manpage.py:51:13: F821 undefined name 'xrange'

[Takeshi KOMIYA]

Did you read the code? It is a code only available under python2. And docutils has still supported it.

if sys.version_info < (3, 0):
    range = xrange

What are you expected?

[Chris Sewell]

What are you expected?

To add # noqa: F821

[Takeshi KOMIYA]

Thanks! Here is a patch to fix it :-)

[Chris Sewell]

thanks :)