Init python environment

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.8
+    - uses: actions/cache@v1
+      with:
+        path: ~/.cache/pip
+        key: pip-${{ hashFiles('requirements.txt') }}-${{ hashFiles('dev-requirements.txt') }}
+    - name: Install dependencies
+      run: pip install -r dev-requirements.txt

.gitignore

@@ -212,3 +212,5 @@ dmypy.json
 .pyre/
 
 # End of https://www.gitignore.io/api/node,python
+
+env/

dev-requirements.txt

@@ -0,0 +1,11 @@
+-r requirements.txt
+
+black==19.10b0
+flake8==3.7.9
+isort==4.3.21
+mypy==0.770
+flake8-bugbear==20.1.4
+flake8-builtins==1.5.2
+flake8-comprehensions==3.2.2
+flake8-mutable==1.2.0
+flake8-tuple==0.4.1

setup.cfg

@@ -0,0 +1,16 @@
+[mypy]
+warn_unused_ignores = True
+strict_optional = True
+check_untyped_defs = True
+ignore_missing_imports = True
+
+[flake8]
+extend_ignore=E128,E501
+
+[isort]
+multi_line_output=3
+include_trailing_comma=True
+force_grid_wrap=0
+use_parentheses=True
+line_length=88
+not_skip=__init__.py