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修改：
Performing system checks...
System check identified no issues (0 silenced).
You have 18 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.
August 08, 2021 - 23:38:41
Django version 3.2.6, using settings 'untitled.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
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Django启动报404错误url.py文件中的路径写法
上面启动报错404 我的项目主要是修改url的path路径 ：path('',views.hello),
url.py
from django.urls import path
from app01 import views
urlpatterns=[
path('',views.hello),
]
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