Format the codebase using Black (#2109)

This commit: 1. Formats all of our existing code using `black`. 2. Adds a note about using `black` to `CONTRIBUTING.rst`. 3. Runs `black --check` as part of CI (failing builds that aren't properly formatted).
2019-06-27 13:05:54 +02:00
parent 91899acfe5
commit b47669403b
82 changed files with 8405 additions and 7075 deletions
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+black
 nose
 pymongo>=3.4
 six==1.10.0