class spaceship:

 def m1(self):
  if 1:
   pass
  self.m2()

 def m2(self):
  if 1:
   pass
  self.m3()

 def m3(self):
  if 1:
   pass

if __name__ == '__main__':

 def trace_dispatch(frame, event, arg):
  print frame.f_code.co_name, frame.f_lineno, event, arg
  frame.f_trace = trace_dispatch
  return None

 import sys
 sys.settrace(trace_dispatch)

 tc = spaceship()
 tc.m1()
 tc.m2()
 tc.m3()