1import sys 2 3deprecated_aliases = {} 4 5 6def deprecated_alias(old_name): 7 def wrap(f): 8 def old_f(*args, **kwargs): 9 ret = f(*args, **kwargs) 10 print("{} is deprecated, use {} instead.".format(old_name, f.__name__), file=sys.stderr) 11 return ret 12 old_f.__name__ = old_name 13 deprecated_aliases[old_name] = f.__name__ 14 setattr(sys.modules[f.__module__], old_name, old_f) 15 return f 16 return wrap 17