url(r'^index/(\d+)/',views.index,name='xxx')

# 前端
	{% url 'xxx' 123 %}
# 后端
	reverse('xxx', args=(1,))

"""
这个数字写代码的时候应该放什么
	数字一般情况下放的是数据的主键值  数据的编辑和删除
	url(r'^edit/(\d+)/',views.edit,name='xxx')
	
	def edit(request,edit_id):
		reverse('xxx',args=(edit_id,))
		
	{%for user_obj in user_queryset%}
		<a href="{% url 'xxx' user_obj.id %}">编辑</a>
	{%endfor%}

"""



# 有名分组反向解析
   url(r'^func/(?P<year>\d+)/',views.func,name='ooo')
# 前端
	<a href="{% url 'ooo' year=123 %}">111</a>  了解
	<a href="{% url 'ooo' 123 %}">222</a>  			记忆

# 后端	
	 # 有名分组反向解析 写法1  了解
   print(reverse('ooo',kwargs={'year':123}))
   # 简便的写法  减少脑容量消耗 记跟无名一样的操作即可
   print(reverse('ooo',args=(111,)))

# 总路由 还要导入include模块   as可以起别名
from app01 import urls as app01_urls
from app02 import urls as app02_urls
urlpatterns = [
    # 1.路由分发
    url(r'^app01/',include(app01_urls)),  # 只要url前缀是app01开头 全部交给app01处理
    url(r'^app02/',include(app02_urls))   # 只要url前缀是app02开头 全部交给app02处理
  
    # 2.终极写法  推荐使用
    url(r'^app01/',include('app01.urls')),
    url(r'^app02/',include('app02.urls'))
    
    # 注意事项:总路由里面的url千万不能加$结尾
]

# 子路由
	# app01 urls.py
  from django.conf.urls import url
  from app01 import views

  urlpatterns = [
      url(r'^reg/',views.reg)
  ]

  # app02 urls.py
  from django.conf.urls import url
  from app02 import views

  urlpatterns = [
      url(r'^reg/',views.reg)
  ]

# 总路由 可以加上namespace区别不同的路由
    url(r'^app01/',include('app01.urls',namespace='app01')),
    url(r'^app02/',include('app02.urls',namespace='app02'))
  # 解析的时候 
  	# app01
  	urlpatterns = [
    url(r'^reg/',views.reg,name='reg')
		]
    # app02
    urlpatterns = [
    url(r'^reg/',views.reg,name='reg')
		]
    # 后端
  	reverse('app01:reg')
    reverse('app02:reg')
    
    # 前端
    {% url 'app01:reg' %}
    {% url 'app02:reg' %}

urlpatterns = [
    url(r'^reg/',views.reg,name='app01_reg')
]
urlpatterns = [
    url(r'^reg/',views.reg,name='app02_reg')
]

from django.urls import path, re_path
		from django.conf.urls import url
		
		re_path(r'^index/',index),
    url(r'^login/',login)

path('index/<int:id>/',index)
	# 将第二个路由里面的内容先转成整型然后以关键字的形式传递给后面的视图函数

	def index(request,id):
    print(id,type(id))
    return HttpResponse('index')
    
  
  	str,匹配除了路径分隔符（/）之外的非空字符串，这是默认的形式
	int,匹配正整数，包含0。
	slug,匹配字母、数字以及横杠、下划线组成的字符串。
	uuid,匹配格式化的uuid，如 075194d3-6885-417e-a8a8-6c931e272f00。
	path,匹配任何非空字符串，包含了路径分隔符（/）（不能用？）

class MonthConverter:
    regex='\d{2}' # 属性名必须为regex

    def to_python(self, value):
        return int(value)

    def to_url(self, value):
        return value # 匹配的regex是两个数字，返回的结果也必须是两个数字
	
	
	from django.urls import path,register_converter
	from app01.path_converts import MonthConverter

	# 先注册转换器
	register_converter(MonthConverter,'mon')

	from app01 import views


	urlpatterns = [
    path('articles/<int:year>/<mon:month>/<slug:other>/', 	views.article_detail, name='aaa'),

]