Format code with black

.travis.yml

@@ -16,8 +16,6 @@ matrix:
         - pip install --upgrade .[big_mode]
         - pip freeze
       script:
-        - flake8 openslides tests
-        - isort --check-only --diff --recursive openslides tests
         - python -m mypy openslides/ tests/
         - python -W ignore -m pytest --cov --cov-fail-under=70
 
@@ -36,6 +34,7 @@ matrix:
       script:
         - flake8 openslides tests
         - isort --check-only --diff --recursive openslides tests
+        - black --check --diff --py36 openslides tests
         - python -m mypy openslides/ tests/
         - python -W ignore -m pytest --cov --cov-fail-under=70
 

make/commands.py

@@ -65,7 +65,7 @@ def min_requirements(args=None):
     print(' '.join(get_lowest_versions(args.requirements)))
 
 
-@command('clear',
+@command('clean',
          help='Deletes unneeded files and folders')
 def clean(args=None):
     """
@@ -76,7 +76,8 @@ def clean(args=None):
     call('find -type d -empty -delete')
 
 
-@command('isort',
+@command('format',
-         help='Sorts all imports in all python files.')
+         help='Format code with isort and black')
 def isort(args=None):
-    return call('isort --recursive openslides tests')
+    call('isort --recursive openslides tests')
+    call('black --py36 openslides tests')

requirements/development.txt

@@ -1,3 +1,4 @@
+black
 coverage
 flake8
 isort

setup.cfg

@@ -15,6 +15,9 @@ include_trailing_comma = true
 multi_line_output = 3
 lines_after_imports = 2
 combine_as_imports = true
+force_grid_wrap = 0
+use_parentheses = true
+line_length = 88
 known_first_party = openslides
 known_third_party = pytest