#!/usr/bin/env python

import inspect, linecache, sys

def tracer(frame, event, arg):
    global z
    (filename, line_no) = inspect.getframeinfo(frame)[0:2]
    print "Event %s at line %d:" % (event, line_no)
    print "\t", linecache.getline(filename, line_no),
    print "----------------------"
    try: 
        if z == 0:
            if line_no == 4:
                print "***We jumped back to line 4 but should have gone to 2**"
                sys.exit(1)
            frame.f_lineno = 2 # And 3 is broken too.
    except NameError:
        pass
    return tracer # This helps emacs figure indentation out

sys.settrace(tracer)
execfile("jumpbug2.py")