Iterate through a list and split into a 1d list

Question

Im trying to loop through a list in python and split words based on characters. I want to return a 1 dimension list as the result.

Example

wordlist = ['border\collie', 'dog\cat', 'horse\hound'] # slash fix

Expected outcome new_list = ['border', 'collie', 'dog', 'cat', 'horse', 'hound']

Everything that Ive tried results in a 2d list.

def split_slash_words(text):
    new_list = []
    new_list.append([i.split("\\") for i in text])
    return new_list

returned a two dimensional array, and I cannot also resplit the new_list (as it is in a list type)

`.split()` returns a list so it's only normal that the output list is a two dimensional list. — Filip, Feb 14 '20 at 20:01

Zaraki Kenpachi · Answer 1 · 2020-02-14T20:05:08.707

5

import re
wordlist = ['border/collie', 'dog\cat', 'horse/hound']

out = []
for item in wordlist:
    for element in re.findall('\w+', item):
        out.append(element)

Output:

['border', 'collie', 'dog', 'cat', 'horse', 'hound']

edited Feb 14 '20 at 20:05

answered Feb 14 '20 at 20:01

Zaraki Kenpachi

5,510
2
15
38

2

This might raise an IndexError exception – Mohammad Jafari Feb 14 '20 at 20:02
@MohammadJafari now will not – Zaraki Kenpachi Feb 14 '20 at 20:05

score 3 · Answer 2 · answered Feb 14 '20 at 20:03

3

The append method adds a list to the end of new_list. If you use the extend method, each item is added to new_list.

answered Feb 14 '20 at 20:03

Joel Van Eeckhout

80
4

This is the answer. !! – gsb22 Feb 14 '20 at 20:05

Iterate through a list and split into a 1d list

2 Answers2