基本格式

from django.urls import path
from . import views

app_name='posting'
urlpatterns=[
    path('posting/',views.index,name='index'),
    path('posting/<slug:postTitle>/',views.getPostByTitle),  #slug匹配任意字符串到 postTitle 变量(作为函数参数)
    path('posting/<int:name>/',views.getPostByTitle),  #匹配任意数字

]

详见

https://kinegratii.github.io/2017/09/25/django2-url-path/