Python中的合并列表 [英] Merge Lists in Python

问题描述

我有2个列表:(列表1，列表2)，我需要将这些列表合并到另一个包含list1和list2的列表中，顺序如下:

I have 2 lists: (list1, list2) and I need to merge these lists to another list which contains list1 and list2 in this order:

• listNew = [list1(i)，list2(i)，list1(i + 1)，list2(i + 1)，...]

我尝试过:

listNew = list1 + list2    
for i in listNew:
    listNew.append(i)
    hranyNew.append(pocetHran/2+i)

但出现错误:

+不支持的操作数类型:"int"和"str"

unsupported operand type(s) for +: 'int' and 'str'

还有另一个问题，如何将listNew[i]和listNew[i+1]与listNew[i+2]和listNew[i+3]进行比较?

And another question, how can I compare listNew[i] and listNew[i+1] with listNew[i+2] and listNew[i+3]?

换句话说，我需要将所有相邻对与pair+1，2等进行比较. 谢谢！

In another words, I need to compare all adjacent pairs with pair+1, 2 and so on.. Thanks!

推荐答案

我想指出一个非常方便的

I want to point out the very convenient itertools.chain():

from itertools import chain

list1 = ['1','2','3']
list2 = ['a','b','c']

listNew = list(chain.from_iterable(zip(list1, list2)))
# listNew = ['1', 'a', '2', 'b', '3', 'c']

您还可以将列表理解与双循环:

listNew = [y for x in zip(list1, list2) for y in x]
# listNew = ['1', 'a', '2', 'b', '3', 'c']

如果要在listNew中连接成对的元素，那就很简单:

If you want to concatenate pairs of elements in your listNew, that is simply:

listNew_ = [x + y for x, y in zip(list1, list2)]
# listNew_ = ['1a', '2b', '3c']

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