zip打包函数,将给出的列表按照一个个元组方式组合,然后组合返回。
zip输入的为可迭代对象,如果长度不同,则以最短的为主,长的省略
>>> a = [1,2,3,4]
>>> b = ['a', 'b', 'c']
>>> c = ['2','3','4','5']
>>> zip(a,b,c)
[(1, 'a', '2'), (2, 'b', '3'), (3, 'c', '4')]
>>> d = 'aaa'
>>> zip(a,d)
[(1, 'a'), (2, 'a'), (3, 'a')]
>>> e = (2,3,4)
>>> zip(a,e)
[(1, 2), (2, 3), (3, 4)]
>>> f = {1,'1',2:'2'}
SyntaxError: invalid syntax
>>> f = {1:'1',2:'2'}
>>> zip(a,f)
[(1, 1), (2, 2)]
>>>