So, I started learning to code in Python and later Django. The first times it was hard looking at tracebacks and actually figure out what I did wrong and where the syntax error was. Some time has passed now and some way along the way, I guess I got a routine in debugging my Django code. As this was done early in my coding experience, I sat down and wondered if how I was doing this was ineffective and could be done faster. I usually manage to find and correct the bugs in my code, but I wonder if I should be doing it faster?

我通常只使用Django启用时提供的调试信息。当事情确实像我想象的那样结束时,我用一个语法错误破坏了代码流,并查看流中那个点的变量,以找出代码在哪里做了与我想要的不同的事情。

但这种情况还能改善吗?是否有一些更好的工具或方法来调试Django代码?


当前回答

我使用PyCharm和其他调试工具。还有一篇不错的文章介绍如何为新手设置这些东西。你可以从这里开始。它讲述了Django项目的PDB和GUI调试。希望有人能从中受益。

其他回答

我发现Visual Studio Code用于调试Django应用程序非常棒。标准的python启动。Json参数运行python manage.py,并附带调试器,因此你可以设置断点,并按自己的喜好逐步执行代码。

一个关于模板标签的小窍门:

@register.filter 
def pdb(element):
    import pdb; pdb.set_trace()
    return element

现在,在模板中,您可以执行{{template_var|pdb}}并进入pdb会话(假设您正在运行本地devel服务器),在那里您可以检查元素到您的心的内容。

这是一种很好的方式,可以看到当对象到达模板时发生了什么。

我使用PyCharm(与eclipse相同的pydev引擎)。真的帮助我能够直观地逐级检查我的代码,并看到发生了什么。

从我自己的经验来看,有两种方法:

使用ipdb,这是一个像pdb一样的增强调试器。 导入ipdb;ipdb.set_trace()或breakpoint() (from python3.7) 使用django shell,只需使用下面的命令。这在您开发新视图时非常有用。 Python manage.py shell

调试Django代码的最佳选择之一是通过wdb: https://github.com/Kozea/wdb

wdb works with python 2 (2.6, 2.7), python 3 (3.2, 3.3, 3.4, 3.5) and pypy. Even better, it is possible to debug a python 2 program with a wdb server running on python 3 and vice-versa or debug a program running on a computer with a debugging server running on another computer inside a web page on a third computer! Even betterer, it is now possible to pause a currently running python process/thread using code injection from the web interface. (This requires gdb and ptrace enabled) In other words it's a very enhanced version of pdb directly in your browser with nice features.

安装并运行服务器,并在代码中添加:

import wdb
wdb.set_trace()

作者认为,pdb的主要区别是:

For those who don’t know the project, wdb is a python debugger like pdb, but with a slick web front-end and a lot of additional features, such as: Source syntax highlighting Visual breakpoints Interactive code completion using jedi Persistent breakpoints Deep objects inspection using mouse Multithreading / Multiprocessing support Remote debugging Watch expressions In debugger code edition Popular web servers integration to break on error In exception breaking during trace (not post-mortem) in contrary to the werkzeug debugger for instance Breaking in currently running programs through code injection (on supported systems)

它有一个很棒的基于浏览器的用户界面。一种使用的乐趣!:)