code reformatted.

.flake8

@@ -1,4 +1,4 @@
 [flake8]
-max-line-length = 130
+max-line-length = 120
 per-file-ignores =
     crontools/*__init__.py: F401

.github/workflows/test.yml

@@ -16,24 +16,24 @@ jobs:
       matrix:
         python-version: [3.7, 3.8, 3.9]
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install pipenv --upgrade
-        pipenv install --python ${{ matrix.python-version }} --dev
-    - name: Run linter
-      run: pipenv run flake8 .
-    - name: Run tests
-      run: PYTHONPATH="$(pwd):$PYTHONPATH" pipenv run py.test --cov=crontools --cov-report=xml tests
-    - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v1
-      with:
-        token: ${{ secrets.CODECOV_TOKEN }}
-        files: ./coverage.xml
-        flags: unittests
-        fail_ci_if_error: true
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install poetry
+          poetry install --no-root
+      - name: Run pre-commit hooks
+        run: poetry run pre-commit run --hook-stage merge-commit --all-files
+      - name: Run tests
+        run: PYTHONPATH="$(pwd):$PYTHONPATH" poetry run py.test --cov=crontools --cov-report=xml tests
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage.xml
+          flags: unittests
+          fail_ci_if_error: true

.pre-commit-config.yaml

@@ -1,52 +1,64 @@
+default_stages:
+ - commit
+ - merge-commit
+
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.4.0
+    rev: v4.4.0
     hooks:
-      - id: check-docstring-first
-        stages:
-          - commit
-          - push
-      - id: check-merge-conflict
-        stages:
-          - push
+      - id: check-yaml
+      - id: check-toml
       - id: trailing-whitespace
-        stages:
-          - commit
-          - push
       - id: end-of-file-fixer
         stages:
           - commit
-          - push
       - id: mixed-line-ending
+        name: fix line ending
         stages:
           - commit
-          - push
         args:
           - --fix=lf
-      - id: no-commit-to-branch
+      - id: mixed-line-ending
+        name: check line ending
+        stages:
+          - merge-commit
+        args:
+          - --fix=no
+  - repo: https://github.com/asottile/add-trailing-comma
+    rev: v2.4.0
+    hooks:
+      - id: add-trailing-comma
         stages:
           - commit
   - repo: https://github.com/pre-commit/mirrors-autopep8
-    rev: v1.5.5
+    rev: v2.0.1
     hooks:
       - id: autopep8
         stages:
           - commit
-          - push
         args:
-          - --max-line-length=130
           - --diff
-  - repo: https://github.com/asottile/add-trailing-comma
-    rev: v2.1.0
-    hooks:
-      - id: add-trailing-comma
-        stages:
-          - commit
-          - push
-  - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.9.0
+  - repo: https://github.com/pycqa/flake8
+    rev: 5.0.4
     hooks:
       - id: flake8
+  - repo: https://github.com/pycqa/isort
+    rev: 5.11.5
+    hooks:
+      - id: isort
+        name: fix import order
         stages:
           - commit
-          - push
+        args:
+          - --line-length=120
+          - --multi-line=9
+          - --project=crontools
+      - id: isort
+        name: check import order
+        stages:
+          - merge-commit
+        args:
+          - --check-only
+          - --line-length=120
+          - --multi-line=9
+          - --project=crontools

crontools/__init__.py

@@ -2,20 +2,10 @@
 Python cron tools.
 """
 
-from .crontab import Crontab
-from .crontab import Range, SecondsRange, MinuteRange, HourRange, MonthdayRange, MonthRange, WeekdayRange, YearRange
-from .crontab import Field, SecondsField, MinuteField, HourField, MonthdayField, MonthField, WeekdayField, YearField, DayField
-
-
-from .__about__ import (
-    __title__,
-    __description__,
-    __url__,
-    __version__,
-    __author__,
-    __email__,
-    __license__,
-)
+from .__about__ import __author__, __description__, __email__, __license__, __title__, __url__, __version__
+from .crontab import Crontab, DayField, Field, HourField, HourRange, MinuteField, MinuteRange, MonthdayField
+from .crontab import MonthdayRange, MonthField, MonthRange, Range, SecondsField, SecondsRange, WeekdayField
+from .crontab import WeekdayRange, YearField, YearRange
 
 __all__ = [
     '__title__',