Python显示函数的调用者

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#!/usr/bin/env python #coding:utf-8   import sys   def show_caller(level=1):     def show(func):         def wrapper(*args, **kwargs):             func(*args, **kwargs)             print '{0.f_code.co_filename}:{0.f_lineno}'.format(sys._getframe(level)), "->", func.__name__         return wrapper     return show   @show_caller(1) def foo():pass