鸭子打字允许元组，列表或可以像对待一样的东西

Question

def foo(spam, obj_of_interest):
"""Pass a _____ and an object of interest, and return [something that does something worthwhile] """
    name = spam[0]
    quest = spam[1]
    fav_color = spam[2]
    # ... interesting code
    return obj_of_interest

你会注意到foo()可以完美地运作，无论它是作为列表传递spam，还是作为元组传递，或者实际上是对元素强制执行命令的任何事情，并且可以像一个清单。

如何在不告诉用户使用特定类型的情况下记录这一事实？

Answer 1

你说，

"""spam is an object that supports indexing."""