要实现自定义错误处理的功能，总共分4步：
1.创建html错误页
2.配置settings ，当DEBUG=True，则不会生效
3.编写视图
4.配置url
views.py
def page_not_found(request,exception): #404 return render(request,"blog/404.html",status=404) def page_error(exception): return render("blog/500.html",status=500) def permission_denied(request,exception): #403 return render(request, "blog/403.html",status=403) def bad_request(request,exception): #400 return render(request, "blog/400.html",status=400)
主程序下urls.py
handler400 = views.bad_request handler403 = views.permission_denied handler404 = views.bad_request handler500 = views.page_error
然后运行：
过程中可能遇到的报错：
# ERRORS:?: (urls.E007) The custom handler500 view ‘blog.views.page_error‘ does not take the correct number of arguments (request).
解决：视图函数中不要request参数
def page_error(exception): #500 return render("blog/500.html")
# ERRORS:?: (urls.E007) The custom handler403 view ‘blog.views.permission_denied‘ does not take the correct number of arguments (request, exception).
解决：视图函数中加上exception参数，虽然没什么用
def permission_denied(request,exception): #403 return render(request, "blog/403.html")
原文：https://www.cnblogs.com/pfeiliu/p/12055823.html