Pandas 添加以列出列表中相邻元素的组合

Question

What I want to do seems simple, say I have an existing list of words:我想做的事情似乎很简单，假设我有一个现有的单词列表：

original_List = ['a', 'b', 'c', 'd'] original_List = ['a', 'b', 'c', 'd']

I want to transform that list into:我想将该列表转换为：

new_List = ['a', 'b', 'c', 'd', 'a b', 'b c', 'c d'] new_List = ['a', 'b', 'c', 'd', 'a b', 'b c', 'c d']

So in te new list we took the original list and then appended to it 2 elements at a time.因此，在新列表中，我们获取了原始列表，然后一次向其附加 2 个元素。

Is there a simple way to do this?有没有一种简单的方法可以做到这一点？

Answer 1

One approach:一种方法：

original_list = ['a', 'b', 'c', 'd']

new_list = original_list + [f"{a} {b}" for a, b in zip(original_list, original_list[1:])]
print(new_list)

Output输出

['a', 'b', 'c', 'd', 'a b', 'b c', 'c d']

Or, as an alternative, use itertools.pairwise :或者，作为替代方案，使用itertools.pairwise ：

from itertools import pairwise
new_list = original_list + [f"{a} {b}" for a, b in pairwise(original_list)]
print(new_list)