Django学习笔记(一)

创建Django项目

个人推荐使用Pycharm社区版

若出现报错,报错如下

Traceback (most recent call last):
  File "D:/Django/mysite1/manage.py", line 22, in <module>
    main()
  File "D:/Django/mysite1/manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "D:\Django\mysite1\venv\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "D:\Django\mysite1\venv\lib\site-packages\django\core\management\__init__.py", line 325, in execute
    settings.INSTALLED_APPS
  File "D:\Django\mysite1\venv\lib\site-packages\django\conf\__init__.py", line 79, in __getattr__
    self._setup(name)
  File "D:\Django\mysite1\venv\lib\site-packages\django\conf\__init__.py", line 66, in _setup
    self._wrapped = Settings(settings_module)
  File "D:\Django\mysite1\venv\lib\site-packages\django\conf\__init__.py", line 157, in __init__
    mod = importlib.import_module(self.SETTINGS_MODULE)
  File "C:\Users\10938\AppData\Local\Programs\Python\Python38\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "D:\Django\mysite1\mysite1\settings.py", line 58, in <module>
    'DIRS': [os.path.join(BASE_DIR, 'templates')]
NameError: name 'os' is not defined

解决方案:在settings.py中导入 os 模块

打开Terminal,运行django项目 python manage.py runserver

更换端口号python manage.py runserver 5000

(venv) D:\Django\mysite1>python manage.py runserver 5000
Watching for file changes with StatReloader
Performing system checks...

System check identified no issues (0 silenced).

You have 17 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.
Jun 27, 2022 - 07:50:30
Django version 2.2.12, using settings 'mysite1.settings'
Starting development server at http://127.0.0.1:5000/
Quit the server with CTRL-BREAK.