sorted()
sorted(list)使list(tuple)按顺序排序
>>> List=['b','d','c','a']
>>> sorted(List)
['a', 'b', 'c', 'd']
reversed()
使list(tuple)倒序
>>> reversed(List)
0x7fc100aee210>
>>> for i in reversed(List):
... print i
...
a
c
d
b
enumerate()
使list或者tuple输出时前面带索引号
>>> enumerate(List)
0x7fc100aec870>
>>> for i in enumerate(List):
... print i
...
(0, 'b')
(1, 'd')
(2, 'c')
(3, 'a')
>>> for i,j in enumerate(List):
... print i,j
...
0 b
1 d
2 c
3 a
zip()
>>> L=[1,2,4,3]
>>> zip(List,L)
[('b', 1), ('d', 2), ('c', 4), ('a', 3)]
>>> dict(zip(List,L))
{'a': 3, 'c': 4, 'b': 1, 'd': 2}