如何将字符串拆分为单词和空格？

Question

I'd like to split a string = ['O little forests,'] so that the output includes both words and spaces, with the last comma appended to the last words. Here's what the desired output should look like:

output = ['O', ' ', 'little', ' ', 'forests,']

I was able to split the given string into a list of words with spaces excluded by using line.split() . I welcome your suggestions!

Answer 1

You could use groupby :

from itertools import groupby

sentence = 'O little forests'

result = [''.join(v) for k, v in groupby(sentence, key=str.isspace)]
print(result)

Output

['O', ' ', 'little', ' ', 'forests']

Answer 2

You can use re (regex):

import re

sentence = 'O little forests'

re.split("( )", sentence) # ['O', ' ', 'little', ' ', 'forests']

Answer 3

You may do this work using re like following code.

import re
string = ['O little forests'] 
for a  in string:
  print(re.split(r'(\s+)', a))

Output:

['O', ' ', 'little', ' ', 'forests']

Answer 4

You can add a space element between each word like this in a list comprehension:

s = 'O little forest'
# puts ' ' element after each word.
st = [k for j in [[e, ' '] for e in s.split()] for k in j]
st.pop() # drop last.
st
>>> ['O', ' ', 'little', ' ', 'forest']