pin black, xref pandas-devgh-29341 (pandas-dev#29351)

jreback · Mateusz Górski · commit 6603b3c8fbef · 2019-11-18T15:09:57.000+01:00
diff --git a/environment.yml b/environment.yml
@@ -16,7 +16,7 @@ dependencies:
   - cython>=0.29.13
 
   # code checks
-  - black
+  - black<=19.3b0
   - cpplint
   - flake8
   - flake8-comprehensions  # used by flake8, linting of unnecessary comprehensions
diff --git a/requirements-dev.txt b/requirements-dev.txt
@@ -3,7 +3,7 @@ python-dateutil>=2.6.1
 pytz
 asv
 cython>=0.29.13
-black
+black<=19.3b0
 cpplint
 flake8
 flake8-comprehensions
