Merge pull request #420 from grahamalama/install-black

Add black to CI & project dependencies

Author: MooseQuest

.github/workflows/pythonapp.yml

@@ -15,7 +15,6 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python 3.8
@@ -33,6 +32,11 @@ jobs:
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Check formatting with black
+      run: |
+        # exit if any files still need formatting
+        bash script/format --check
+      continue-on-error: true
     - name: Test with pytest
       run: |
         pip install pytest

.gitignore

@@ -1,5 +1,6 @@
 # Editors
 .idea/
+.vscode/settings.json
 
 # Environments
 .env

Pipfile

@@ -4,12 +4,13 @@ url = "https://pypi.org/simple"
 verify_ssl = true
 
 [dev-packages]
+black = "==19.10b0"
+pytest = "*"
 
 [packages]
 streamlit = "*"
 pandas = "*"
 numpy = "*"
-pytest = "*"
 altair = "*"
 dash = "*"
 dash-bootstrap-components = "*"
@@ -18,3 +19,6 @@ PyYAML = "*"
 
 [requires]
 python_version = "3.7"
+
+[pipenv]
+allow_prereleases = true