Python zip() 函数 |

实例(Python 2.0+)

>>> 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，*zipped 可理解为解压，返回二维矩阵式
[ ( 1 , 2 , 3 ) , ( 4 , 5 , 6 ) ]

实例(Python 3.0+)

>>> a = [ 1 , 2 , 3 ]
>>> b = [ 4 , 5 , 6 ]
>>> c = [ 4 , 5 , 6 , 7 , 8 ]
>>> zipped = zip ( a , b ) # 返回一个对象
>>> zipped
< zip object at 0x103abc288 >
>>> list ( zipped ) # list() 转换为列表
[ ( 1 , 4 ) , ( 2 , 5 ) , ( 3 , 6 ) ]
>>> list ( zip ( a , c ) ) # 元素个数与最短的列表一致
[ ( 1 , 4 ) , ( 2 , 5 ) , ( 3 , 6 ) ]
>>> a1 , a2 = zip ( * zip ( a , b ) ) # 与 zip 相反，zip(*) 可理解为解压，返回二维矩阵式
>>> list ( a1 )
[ 1 , 2 , 3 ]
>>> list ( a2 )
[ 4 , 5 , 6 ]

Python 内置函数

['a', 'b', 'c', 'd', 'e', 'f']
[('a', 'b'), ('b', 'c'), ('c', 'd'), ('d', 'e'), ('e', 'f')]

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