新建一个项目 app02
在 app02/ 下创建 urls.py：
from django.conf.urls import url
from app02 import views
urlpatterns = [
url(r'^blog/', views.test, name="blog"),
]
app01/urls.py：
from django.conf.urls import url
from app01 import views
urlpatterns = [
url(r'^blog/', views.blog, name="blog"),
]
这两个都有 blog/
