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?
有很多方法可以做到这一点，但最直接的是简单
使用Python调试器。只需在Django视图函数中添加如下一行:
import pdb; pdb.set_trace()
or
breakpoint() #from Python3.7
如果您试图在浏览器中加载该页，浏览器将挂起，并提示您对实际执行的代码进行调试。
但是也有其他的选择(我不推荐):
* return HttpResponse({variable to inspect})
* print {variable to inspect}
* raise Exception({variable to inspect})
但是对于所有类型的Python代码，强烈推荐使用Python调试器(pdb)。如果您已经开始使用pdb，那么您还需要了解使用ipython进行调试的IPDB。
对pdb有一些更有用的扩展
pdb++，由Antash建议。
pudb，由PatDuJour建议。
在Django中使用Python调试器，由Seafangs建议。
我刚找到wdb (http://www.rkblog.rk.edu.pl/w/p/debugging-python-code-browser-wdb-debugger/?goback=%2Egde_25827_member_255996401)。它有一个非常漂亮的用户界面/ GUI，所有的铃铛和口哨。作者这样说wdb -
“像PyCharm这样的ide有自己的调试器。它们提供了相似或相同的功能……然而，要使用它们，你必须使用那些特定的ide(其中一些是非免费的，或者可能不适用于所有平台)。根据你的需要选择合适的工具。”
我想我应该把它传下去。
这也是一篇关于python调试器的非常有用的文章:
https://zapier.com/engineering/debugging-python-boss/
最后，如果你想在Django中看到一个漂亮的调用堆栈的图形打印输出，checkout:
https://github.com/joerick/pyinstrument。只需将pyinstrument.middleware.ProfilerMiddleware添加到MIDDLEWARE_CLASSES中，然后将?profile添加到请求URL的末尾以激活剖析器。
也可以从命令行或导入作为模块运行pyinstrument。
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!：）
