Debug a Python program on Ctrl-C

signal_handler.py

# Signal handler example. Debugger starts with Ctrl-C:

import signal
def  int_handler(signal, frame):
        import pdb
        pdb.set_trace(frame)
signal.signal(signal.SIGINT, int_handler)

# Put that at the top of your script and you can start debugging your script at any 
# point by type Ctrl-C. Resume programe execution by typing exit at the Pdb prompt.