使用black做代码格式化 (#1675)

* Create black.yml

* black format

* 更新 badge

.github/workflows/black.yml

@@ -0,0 +1,10 @@
+name: Lint
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: psf/black@stable

README.md

@@ -2,7 +2,6 @@
 
 # <a href="https://archerydms.com/" target="_blank" rel="noopener noreferrer">Archery</a>
 
-[![star](https://gitee.com/rtttte/Archery/badge/star.svg?theme=gvp)](https://gitee.com/rtttte/Archery)
 [![Django CI](https://github.com/hhyo/Archery/actions/workflows/django.yml/badge.svg)](https://github.com/hhyo/Archery/actions/workflows/django.yml)
 [![Release](https://img.shields.io/github/release/hhyo/archery.svg)](https://github.com/hhyo/archery/releases/)
 [![codecov](https://codecov.io/gh/hhyo/archery/branch/master/graph/badge.svg)](https://codecov.io/gh/hhyo/archery)
@@ -11,7 +10,7 @@
 [![Publish Docker image](https://github.com/hhyo/Archery/actions/workflows/docker-image.yml/badge.svg)](https://github.com/hhyo/Archery/actions/workflows/docker-image.yml)
 [![docker_pulls](https://img.shields.io/docker/pulls/hhyo/archery.svg)](https://hub.docker.com/r/hhyo/archery/)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](http://github.com/hhyo/archery/blob/master/LICENSE)
-[![996.icu](https://img.shields.io/badge/link-996.icu-red.svg)](https://996.icu)
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 
 [文档](https://archerydms.com/) | [FAQ](https://github.com/hhyo/archery/wiki/FAQ) | [Releases](https://github.com/hhyo/archery/releases/)
 

archery/__init__.py

@@ -1,2 +1,2 @@
 version = (1, 9, 0)
-display_version = '.'.join(str(i) for i in version)
+display_version = ".".join(str(i) for i in version)

archery/asgi.py

@@ -11,6 +11,6 @@
 
 from django.core.asgi import get_asgi_application
 
-os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'archery.settings')
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "archery.settings")
 
 application = get_asgi_application()