Fix style checks. (#791)

Fixes issues seen in #788.

Authors:
  - Bradley Dice (https://github.com/bdice)

Approvers:
  - Mark Harris (https://github.com/harrism)
  - H. Thomson Comer (https://github.com/thomcom)
  - Ray Douglass (https://github.com/raydouglass)

URL: #791

ci/checks/style.sh

@@ -19,7 +19,7 @@ ISORT=`isort --check-only python/cuspatial --settings-path=python/cuspatial/setu
 ISORT_RETVAL=$?
 
 # Run black and get results/return code
-BLACK=`black --check python`
+BLACK=`black --config pyproject.toml --check --diff python`
 BLACK_RETVAL=$?
 
 # Run flake8 and get results/return code

pyproject.toml

@@ -2,7 +2,7 @@
 line-length = 79
 target-version = ["py38"]
 include = '\.py?$'
-exclude = '''
+force-exclude = '''
 /(
     thirdparty |
     \.eggs |