如何从命令行调试使用python -m运行的Python模块？ [英] How to debug a Python module run with python -m from the command line?

问题描述

我知道可以使用命令行从命令行调试Python脚本

I know that a Python script can be debugged from the command line with

python -m pdb my_script.py

如果 my_script.py 是旨在使用 python my_script.py 运行。

但是，python模块 my_module.py 应该与 python -m my_module 运行。即使包含相对导入的脚本也应使用 python -m 运行。如何在 pdb 的控制下运行 python -m my_module ？以下不起作用：

However, a python module my_module.py should be run with python -m my_module. Even scripts that contain relative imports should be run with python -m. How can I run python -m my_module under pdb's control? The following does not work:

python -m pdb -m my_module

推荐答案

您现在不能这样做，因为 -m 终止选项列表

You can't do it now, because -m terminates option list

python -h
...
-m mod : run library module as a script (terminates option list)
...

表示要解释其余参数列表是 mod的工作，而此行为完全取决于内部设计 mod 的方式以及它是否支持另一个 -m

That means it's mod's job to interpret the rest of the arguments list and this behavior fully depends on how mod is designed internally and whether it support another -m

让我们检查一下 python 2.x 的rel = noreferrer> pdb 。实际上，没有什么有趣的地方，它只希望提供脚本名称：

Lets check out what's happening inside pdb of python 2.x. Actually, nothing intereseting, it only expects a script name to be supplied:

   if not sys.argv[1:] or sys.argv[1] in ("--help", "-h"):
        print "usage: pdb.py scriptfile [arg] ..."
        sys.exit(2)

    mainpyfile =  sys.argv[1]     # Get script filename
    if not os.path.exists(mainpyfile):
        print 'Error:', mainpyfile, 'does not exist'
        sys.exit(1)

    del sys.argv[0]         # Hide "pdb.py" from argument list

    # Replace pdb's dir with script's dir in front of module search path.
    sys.path[0] = os.path.dirname(mainpyfile)

    # Note on saving/restoring sys.argv: it's a good idea when sys.argv was
    # modified by the script being debugged. It's a bad idea when it was
    # changed by the user from the command line. There is a "restart" command
    # which allows explicit specification of command line arguments.
    pdb = Pdb()
    while True:
        try:
            pdb._runscript(mainpyfile)

与 Python 3.x

Same for the currently released versions of python 3.x

5天前，已合并允许执行您要问的请求请求。多么神秘的巧合！这是代码

The pull request that allows to do what you're asking has been merged 5 days ago. What a mysterious coincidence! Here's the code

因此，请稍等一下即将发布的python 3.x版本，以解决此问题）

So just wait a bit for the upcoming python 3.x versions to have this issue resolved )

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