Iterate over two list of different sizes in python

问题

Value = [1,2,3,4,5,6]
content = ['a','b','c','d']

for a,b in itertools.zip_longest(Value , content):
   print(a,b)

The Output that i get using the above code is as follows:

1 a
2 b
3 c
4 d
5 None
6 None

what I am Looking for is :

1 a
2 b
3 c
4 d
5 a
6 b

basically once one list is exhausted it should take the values again from starting. if any one could help would mean alot

回答1:

You can use itertools.cycle with zip instead:

import itertools
Value = [1,2,3,4,5,6]
content = ['a','b','c','d']

for a,b in zip(Value , itertools.cycle(content)):
   print(a,b)

This outputs:

1 a
2 b
3 c
4 d
5 a
6 b

来源：https://stackoverflow.com/questions/51375231/iterate-over-two-list-of-different-sizes-in-python