zip() 函数用于将可迭代的对象作为参数,将对象中对应的元素打包成一个个元组,然后返回由这些元组组成的列表。
如果各个迭代器的元素个数不一致,则返回列表长度与最短的对象相同,利用 * 号操作符,可以将元组解压为列表。
例子:
>>>a = [1,2,3]
>>> b = [4,5,6]
>>> c = [4,5,6,7,8]
>>> zipped = zip(a,b) # 打包为元组的列表
[(1, 4), (2, 5), (3, 6)]
>>> zip(a,c) # 元素个数与最短的列表一致
[(1, 4), (2, 5), (3, 6)]
>>> zip(*zipped) # 与 zip 相反,可理解为解压,返回二维矩阵式
[(1, 2, 3), (4, 5, 6)]
a = [1,2,3]
b = [4,5,6]
c = [4,5,6,7,8]
zipped = list(zip(a,b))
print(zipped)
结果为:[(1, 4), (2, 5), (3, 6)]
a = [1,2,3]
b = [4,5,6]
c = [4,5,6,7,8]
zipped = dict(zip(a,b))
print(zipped)
结果为:{1: 4, 2: 5, 3: 6}
参考文献: