FEA: Add Python code formatting in github action according to PEP8

.github/workflows/python-package.yml

@@ -66,4 +66,22 @@ jobs:
         python -m pytest -v tests/config/test_config.py
         export PYTHONPATH=.
         python tests/config/test_command_line.py --use_gpu=False --valid_metric=Recall@10 --split_ratio=[0.7,0.2,0.1] --metrics='["Recall"]' --topk=[10] --epochs=200 --eval_setting='LO_RS' --learning_rate=0.3
-
+  # Use black to test code format
+  # Reference code:
+  #     https://black.readthedocs.io/en/stable/integrations/github_actions.html
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install dependencies
+        run: |
+          pip install black[jupyter]
+      - name: Test code format
+        uses: psf/black@stable
+        id: action-black
+        with:
+          options: "."
+      - name: Apply code-format changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Format Python code according to PEP8

docs/source/conf.py

@@ -13,17 +13,18 @@
 import sphinx_rtd_theme
 import os
 import sys
-sys.path.insert(0, os.path.abspath('../..'))
+
+sys.path.insert(0, os.path.abspath("../.."))
 
 
 # -- Project information -----------------------------------------------------
 
-project = 'RecBole'
-copyright = '2020, RecBole Contributors'
-author = 'AIBox RecBole group'
+project = "RecBole"
+copyright = "2020, RecBole Contributors"
+author = "AIBox RecBole group"
 
 # The full version, including alpha/beta/rc tags
-release = '0.2.0'
+release = "0.2.0"
 
 
 # -- General configuration ---------------------------------------------------
@@ -32,24 +33,24 @@
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.napoleon',
-    'sphinx.ext.viewcode',
-    'sphinx_copybutton',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.napoleon",
+    "sphinx.ext.viewcode",
+    "sphinx_copybutton",
 ]
 
 autodoc_mock_imports = ["pandas", "pyecharts"]
 # autoclass_content = 'both'
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = 'en'
+language = "en"
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
@@ -65,10 +66,10 @@
 # html_theme = 'alabaster'
 
 
-html_theme = 'sphinx_rtd_theme'
+html_theme = "sphinx_rtd_theme"
 html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ["_static"]

recbole/__init__.py

@@ -2,4 +2,4 @@
 from __future__ import print_function
 from __future__ import division
 
-__version__ = '1.0.1'
+__version__ = "1.0.1"