Add pre-commit configuration

.flake8

@@ -1,7 +1,7 @@
 [flake8]
-ignore = C901, W504
-max-line-length = 125
-exclude = .git,__pycache__,old,build,dist,*/migrations/*.py
+extend-ignore = C901, W504, E203, E701
+max-line-length = 130
+exclude = .git,__pycache__,old,build,dist,*migrations*,*snapshots*
 max-complexity = 10
 per-file-ignores =
     /**/tests/*_mock_data.py: E501

.github/workflows/lint.yml

@@ -0,0 +1,23 @@
+name: Python lint check
+
+on:
+  push:
+    branches:
+      - develop
+  pull_request:
+
+
+jobs:
+  pre_commit_checks:
+    name: 🚴 Pre-Commit checks 🚴
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@main
+      - name: Install poetry
+        run: pipx install poetry
+      - uses: actions/setup-python@main
+        with:
+          cache: 'poetry'
+      - run: poetry install
+      - uses: pre-commit/action@main

.pre-commit-config.yaml

@@ -0,0 +1,27 @@
+default_language_version:
+  python: python3
+
+# NOTE: Update in .flake8 pyproject.toml as well
+exclude: |
+    (?x)^(
+      \.git|
+      __pycache__|
+      .*snap_test_.*\.py|
+      .+\/.+\/migrations\/.*
+    )
+
+repos:
+  - repo: https://github.com/psf/black
+    rev: 24.3.0
+    hooks:
+      - id: black
+
+  - repo: https://github.com/PyCQA/isort
+    rev: 5.13.2
+    hooks:
+      - id: isort
+
+  - repo: https://github.com/PyCQA/flake8
+    rev: 7.0.0
+    hooks:
+      - id: flake8

pyproject.toml

@@ -113,8 +113,8 @@ reportMissingImports = true
 reportMissingTypeStubs = false
 
 [tool.black]
-line-length = 125
-py36 = true
+line-length = 130
+target-version = ['py39']
 include = '\.pyi?$'
 exclude = '''
 /(
@@ -128,7 +128,19 @@ exclude = '''
   | docs
 )/
 '''
-extend-exclude = '^.*\b(migrations)\b.*$'
+# NOTE: Update in .pre-commit-config.yaml as well
+extend-exclude = "^.*\\b(migrations)\\b.*$ (__pycache__|.*snap_test_.*\\.py|.+/+.+/+migrations/+.*)"
+
+[tool.isort]
+profile = "black"
+multi_line_output = 3
+# NOTE: Update in .pre-commit-config.yaml as well
+skip = [
+    "**/__pycache__",
+    "**/snap_test_*.py",
+    "**/migrations/*.py",
+]
+
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]

utils/common.py

@@ -433,7 +433,7 @@ def excel_to_python_date_format(excel_format):
     # TODO: support all formats
     # First replace excel's locale identifiers such as [$-409] by empty string
     python_format = re.sub(
-        '(\[\\$-\d+\])', '', excel_format.upper()  # noqa: W605
+        r'(\[\\$-\d+\])', '', excel_format.upper()
     ).\
         replace('\\', '').\
         replace('YYYY', '%Y').\