Ignore non-function pytest items

[cpennington]

Certain py.test plugins create items that don't have a function attribute. The hypothesis plugin can ignore those.

(This affects pytest-pep8 and pytest-pylint in particular)

[cpennington]

The code that this is conflicting with may resolve the problem. I'll test it, and close if so.

[DRMacIver]

Yeah, I think this is the same as #367 and #368. There's a released version with the fix for those (3.5.2). See if upgrading to that fixes your problem?

[cpennington]

Yeah, it does.