PEP8 cleanup

[agramfort]

running pyflakes gives me:

$ pyflakes ot/*/*.py ot/*.py examples/*.py
ot/optim.py:9: '.bregman.sinkhorn_stabilized' imported but unused
ot/utils.py:96: undefined name 'reduce'
examples/demo_OTDA_classes.py:6: 'numpy as np' imported but unused
examples/demo_barycenter_1D.py:12: 'mpl_toolkits.mplot3d.Axes3D' imported but unused
examples/demo_barycenter_1D.py:14: 'matplotlib.colors.colorConverter' imported but unused

when running flake8

$ flake8 ot/*/*.py ot/*.py examples/*.py

you'll see that you have a lot of pep8 style violations.

[rflamary]

Hello, pyflakes errors have been corrected in commit e2733d3.

pep8 needs much more work and will be addressed in the future.

[agramfort]

thanks for the quick fix !