遇到的错误

1. NoReverseMatch at /
   'blog' is not a registered namespace
   解决方法：
   app应用的urls中没有添加应用名
   app_name = 'blog'

raise ImproperlyConfigured('mysqlclient 1.3.13 or newer is required; you have %s.' % Database.__version__)

解决方法：

找到Python安装路劲下的Python36-32Libsite-packagesdjangodbackendsmysqlase.py文件 将文件中的如下代码注释

if version < (1, 3, 3):
raise ImproperlyConfigured("mysqlclient 1.3.3 or newer is required; you have %s" % Database.version)

2.'Specifying a namespace in include() without providing an app_name is not supported. Set the app_name attribute in the included module, or pass a 2-tuple containing the list of patterns and app_name instead.'查找错误出处，为conf.py文件

解决如下：

path('order/',include('order.urls,namespace='order'),#订单模块,改为

path('order/',include(('order.urls','order'),namespace='order')),#订单模块