如何从python中的两个列表生成嵌套列表

Question

我是python的新手,我有两个列表:

l1 = ['a','b','c','d']
l2 = ['new']

我想得到这样的新名单

l3 = [('a','new'),('b','new'),('c','new'),('d','new')]

将两个列表组合在一起的最佳方法是什么？

Answer 1

>>> from itertools import product
>>> l1 = ['a','b','c','d']
>>> l2 = ['new']
>>> list(product(l1,l2))
[('a', 'new'), ('b', 'new'), ('c', 'new'), ('d', 'new')]

Answer 2

如果l2总是只有一个元素就没有必要使事情过于复杂

l3 = [(x, l2[0]) for x in l1]