flake8 fix

[will-moore]

This is failing travis on a bunch of PRs (or has been patched to the PRs). Would be nice to get this in ASAP.

[joshmoore]

E       ModuleNotFoundError: No module named 'numpy'

which I assume is in another PR, no?

[will-moore]

Grrr, yes @joshmoore that was your commit I just cherry-picked...

[will-moore]

Yey - green. Good to merge?

[snoopycrimecop]

Conflicting PR. Removed from build OMERO-plugins-push#143. See the console output for more details. Possible conflicts:

• PR #351 will-moore 'Handle unicode figure names in export'
  • .omeroci/app-srv
• PR #354 will-moore 'script py3 fixes'
  • .omeroci/app-srv

--conflicts

[snoopycrimecop]

Conflicting PR. Removed from build OMERO-plugins-push#114. See the console output for more details. Possible conflicts:

• PR #351 will-moore 'Handle unicode figure names in export'
  • setup.py
• PR #354 will-moore 'script py3 fixes'
  • setup.py

--conflicts

[jburel]

you have the same commits in multiple PRs... Need to check the sequence here

[jburel]

This PR is the "cleanest" since it fixes the travis issue. Merging, @will-moore will cherry-pick commits on other PR and clean them