Starting python debugger automatically on error

Question

This is a question I have wondered about for quite some time, yet I have never found a suitable solution. If I run a script and I come across, let\'s say an IndexError, pyth

Answer 1

Use the following module:

import sys

def info(type, value, tb):
    if hasattr(sys, 'ps1') or not sys.stderr.isatty():
    # we are in interactive mode or we don't have a tty-like
    # device, so we call the default hook
        sys.__excepthook__(type, value, tb)
    else:
        import traceback, pdb
        # we are NOT in interactive mode, print the exception...
        traceback.print_exception(type, value, tb)
        print
        # ...then start the debugger in post-mortem mode.
        # pdb.pm() # deprecated
        pdb.post_mortem(tb) # more "modern"

sys.excepthook = info

Name it debug (or whatever you like) and put it somewhere in your python path.

Now, at the start of your script, just add an import debug.