TST: flake8

[pllim]

Same as #141 . See if creating a new one now would make Travis stop ignoring...

[pllim]

Nope, adding Python files to the diff doesn't kick of Travis either. 🤷‍♀️

Aha, it is the allowed failure stuff!

[coveralls]

Coverage decreased (-0.08%) to 80.89% when pulling 7f86564 on pllim:flake8-try2 into c1672a5 on spacetelescope:master.

[pllim]

Note: You can ignore coveralls. It reports decrease because I deleted some lines w.r.t. master.

[pllim]

p.s. As it is, the state of flake8 "violations" are not too bad. But I don't want to fix them all yet to avoid conflicts with my other 2 PRs. It is a matter of a tiny follow-up PR to remove "allowed failures" and clean these up:

gwcs/__init__.py:16:1: E402 module level import not at top of file
gwcs/__init__.py:22:5: F401 '.wcs.*' imported but unused
gwcs/__init__.py:23:5: F401 '.wcstools.*' imported but unused
gwcs/__init__.py:24:5: F401 '.coordinate_frames.*' imported but unused
gwcs/__init__.py:25:5: F401 '.selector.*' imported but unused
gwcs/utils.py:10:1: F401 'astropy.modeling.models.Mapping' imported but unused
gwcs/utils.py:16:1: F401 'astropy.utils.decorators.deprecated' imported but unused
gwcs/utils.py:407:77: E502 the backslash is redundant between brackets
gwcs/utils.py:538:15: F821 undefined name 'is_separable'
gwcs/selector.py:387:9: E741 ambiguous variable name 'l'
gwcs/selector.py:390:9: E741 ambiguous variable name 'l'
gwcs/wcs.py:482:13: E722 do not use bare except'
gwcs/tests/setup_package.py:3:1: E302 expected 2 blank lines, found 1
gwcs/tests/setup_package.py:5:9: F821 undefined name '_ASTROPY_PACKAGE_NAME_'
gwcs/tests/test_region.py:39:1: E266 too many leading '#' for block comment
gwcs/tests/test_region.py:104:36: E128 continuation line under-indented for visual indent
gwcs/tests/test_utils.py:64:24: E128 continuation line under-indented for visual indent
gwcs/tests/test_utils.py:65:23: E124 closing bracket does not match visual indentation
gwcs/tests/test_utils.py:67:24: E128 continuation line under-indented for visual indent
gwcs/tests/test_utils.py:68:23: E124 closing bracket does not match visual indentation
gwcs/tests/test_wcs.py:16:1: F401 '..utils.DimensionalityError' imported but unused
gwcs/tests/test_wcs.py:35:1: E302 expected 2 blank lines, found 1
gwcs/tests/test_wcs.py:297:1: E303 too many blank lines (3)