'''
original: http://code.activestate.com/recipes/65287/

Put this in python module dir, on mac: /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
or /usr/local/lib/python3.*/site-packages

Run your script this way:
>> python -m autopdb /path/script.py
'''


import bdb
import sys

def info(type, value, tb):
   if hasattr(sys, 'ps1') \
         or not sys.stdin.isatty() \
         or not sys.stdout.isatty() \
         or not sys.stderr.isatty() \
         or issubclass(type, bdb.BdbQuit) \
         or issubclass(type, SyntaxError):
      # 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()

sys.excepthook = info

# execfile(sys.argv[1]) # py2
exec(open(sys.argv[1], 'rb').read()) # py3