Run black on distributions/ and */__init__.py

[aliakbars]

xref #4109

[MarcoGorelli]

Nice, thanks @aliakbars !

Files pymc3/distributions/discrete.py , pymc3/distributions/multivariate.py , and pymc3/step_methods/metropolis.py are huge - could they be done is a separate pull request?

[codecov]

Codecov Report

Merging #4139 into master will increase coverage by 0.00%.
The diff coverage is 72.41%.

@@           Coverage Diff           @@
##           master    #4139   +/-   ##
=======================================
  Coverage   88.74%   88.74%           
=======================================
  Files          89       89           
  Lines       14037    14024   -13     
=======================================
- Hits        12457    12446   -11     
+ Misses       1580     1578    -2     

Impacted Files	Coverage Δ
pymc3/distributions/simulator.py	85.48% <ø> (ø)
pymc3/distributions/transforms.py	97.70% <ø> (+0.25%)	⬆️
pymc3/stats/__init__.py	92.00% <ø> (ø)
pymc3/step_methods/sgmcmc.py	0.00% <0.00%> (ø)
pymc3/plots/__init__.py	50.00% <8.33%> (ø)
pymc3/step_methods/gibbs.py	40.00% <40.00%> (ø)
pymc3/step_methods/hmc/integration.py	89.79% <50.00%> (ø)
pymc3/step_methods/elliptical_slice.py	95.12% <66.66%> (ø)
pymc3/step_methods/hmc/hmc.py	92.15% <77.77%> (ø)
pymc3/step_methods/hmc/nuts.py	97.46% <90.00%> (ø)
... and 13 more

[aliakbars]

Nice, thanks @aliakbars !

Files pymc3/distributions/discrete.py , pymc3/distributions/multivariate.py , and pymc3/step_methods/metropolis.py are huge - could they be done is a separate pull request?

Certainly. Should I create one pull request for each of them? @MarcoGorelli

[MarcoGorelli]

I'd suggest a single PR for those 3

[AlexAndorra]

Thanks for the PR @aliakbars ! Regarding the tests failure, it seems like pylint is complaining: https://travis-ci.org/github/pymc-devs/pymc3/jobs/730683202#L2215

[aliakbars]

My bad, @AlexAndorra. Must have pressed something accidentally while viewing the code. It has passed the CI as well now.

[AlexAndorra]

Looks good now, thanks @aliakbars !