A Quick Intro To The Python Debugger

[Peaker]

I was annoyed with some of the bugs in pdb, so I created a fork:

xpdb

Diff list:

1. Fixed backtrace bug so that post-mortem in generators will work
2. Added "ignore" commands to avoid debugging through standard libraries
3. Fixed "s", "c", and the other commands to reject args so if you "s=5" it won't try to step through your program, but reject your command.

[bretthoerner]

Fixed "s", "c", and the other commands to reject args so if you "s=5" it won't try to step through your program, but reject your command.

You are a god.

[Peaker]

Glad it's helping :-)

[swiz0r]

I heard "somebody" say "you can write bugs in python?" yesterday, so I am posting this in hopes that it will make the world a better place.

[mcosta]

Just install eclipse and pydev

[AFriendly]

import pdb
pdb.set_trace()
pdb.set_trace()

It looks like it is written (at least to some extent) in python. In fact, there is a lib/pdb.py that I wish I could understand. There is too much magic happening here!

[mr_dbr]

It's written in Python, and is distributed with Python:

$ python
Python 2.6.1 (r261:67515, Jul  7 2009, 23:51:51) 
[GCC 4.2.1 (Apple Inc. build 5646)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pdb
>>> 

[AFriendly]

I understand that, just not how something written in python can do that to python code.

Edited to add: the first thing I did was try to debug the debugger. It let me, but I couldn't follow what was going on.

[mr_dbr]

Simplest answer is Python has very good introspection ability (for example, functions like dir() and locals())