Matlab's keyboard command in python

A nice function to mimic matlab's keyboard command in python.

import code
import sys
def keyboard(banner=None):
    ''' Function that mimics the matlab keyboard command '''
    # use exception trick to pick up the current frame
    try:
        raise None
    except:
        frame = sys.exc_info()[2].tb_frame.f_back
    print "# Use quit() to exit :) Happy debugging!"
    # evaluate commands in current namespace
    namespace = frame.f_globals.copy()
    namespace.update(frame.f_locals)
    try:
        code.interact(banner=banner, local=namespace)
    except SystemExit:
        return