在Python中，* zip(list1，list2)返回什么类型的对象? [英] In Python what type of object does *zip(list1, list2) return?

问题描述

可能重复:
Python:一劳永逸. Star运算符在Python中是什么意思?

Possible Duplicate:
Python: Once and for all. What does the Star operator mean in Python?

x = [1, 2, 3]
y = [4, 5, 6]
zipped = zip(x, y)
list(zipped)

x2, y2 = zip(*zip(x, y))
x == list(x2) and y == list(y2)

*zip(x, y)返回什么类型的对象?为什么

What type of object does *zip(x, y) return? Why

res = *zip(x, y)
print(res)

不起作用?

推荐答案

Python中的星号"operator"不会返回对象；这是一种语法结构，意思是以给出的列表作为参数调用函数."

The asterisk "operator" in Python does not return an object; it's a syntactic construction meaning "call the function with the list given as arguments."

所以:

x = [1、2、3]
f(* x)

x = [1, 2, 3]
f(*x)

等效于:

f(1、2、3)

与此相关的博客条目(不是我的): http://www.technovelty.org/code/python/asterisk.html

Blog entry on this (not mine): http://www.technovelty.org/code/python/asterisk.html

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