An enhancement to the "python" executable that automatically launches you into a debugger if your code throws an exception.

trypy

#!/bin/bash

# An enhancement to the "python" executable that automatically launches you into the python debugger on error.
# 
# Use it like you would the "python" executable, for example:
# $ trypy somefile.py
# or
# $ trypy somefile.py arg1 arg2
#
# EXAMPLE: 
# $ cat fails.py 
# import sys
# print sys.argv[1]
# print 1 / 0
# $ trypy fails.py hi
# hi
# Traceback (most recent call last):
#   File "<string>", line 6, in <module>
#   File "fails.py", line 3, in <module>
#     print 1 / 0
# ZeroDivisionError: integer division or modulo by zero
# > /path/to/fails.py(3)<module>()
# -> print 1 / 0
# (Pdb) 
# 
# By Naftali Harris, with great thanks to 
# http://stackoverflow.com/questions/242485/starting-python-debugger-automatically-on-error#answer-242514
# for showing how to enter the debugger on failure!

if [[ $# -lt 1 ]]
then
    echo "Usage:"
    echo "$ `basename $0` somefile.py"
    echo "$ `basename $0` somefile.py arg1 [arg2] ..."
    exit -1
fi

python -c "
import sys
sys.argv = sys.argv[1:] # remove '-c'
del sys # remove sys so stay clean
try:
    execfile('$1')
except:
    import sys, traceback, pdb
    type, value, tb = sys.exc_info()
    traceback.print_exc()
    pdb.post_mortem(tb)
" "$@"