Fix misleading error message for E251

[ymattw]

Here's my code snip:

    17  setup(
    18      name = 'cdiff',
    19      version = _meta['version'],

And the pep8 report:

~/ws/cdiff (master)$ pep8 --first --show-source setup.py 
setup.py:18:9: E251 no spaces around keyword / parameter equals
    name = 'cdiff',
        ^

I was very confused when reading the message, I think it is misleading and better to change the "no" to "unexpected" in the message.

BTW do you think we should allow the spaces around the equal sign in above case that one parameter takes the whole line? I personally think that is more readable.

[sigmavirus24]

👍 Alternatively, "There should be no spaces ..."

[florentx]

I agree, and the docs/intro.rst should be updated too.

[florentx]

Thank you

[sigmavirus24]

🍰