如何将数组中的嵌套字符串转换为分离的单词？

Question

I'm trying to do a simple array & string transformation with Python yet I'm stuck. I have this array :

data = ['one, two, three',  'apple, pineapple',  'frog, rabbit, dog, cat, horse'] 

And I would like to arrive to this result :

new_data = ['one', 'two', 'three', 'apple', 'pineapple', 'frog', 'rabbit', 'dog', 'cat', 'horse']

---

This is what I'm doing but whenever I use

data_to_string = ''.join(data) 
new_data = re.findall(r"[\w']+", data_to_string)

it gives me this :

['one', 'two', 'threeapple', 'pineapplefrog', 'rabbit', 'dog', 'cat', 'horse']

As you can see "threeapple" and "pineapplefrog" aren't separated, how can I avoid this issue ?

Answer 1

How about some simple list comprehension and string methods? re is overkill for this.

>>> data = ['one, two, three',  'apple, pineapple',  'frog, rabbit, dog, cat, horse']
>>> [word.strip() for string in data for word in string.split(',')]
['one', 'two', 'three', 'apple', 'pineapple', 'frog', 'rabbit', 'dog', 'cat', 'horse']

Answer 2

Look into list comprehensions, they're great.

Here's your answer:

[word for string in data for word in string.split(", ")]

Answer 3

use join and split

','.join(data).split(',')

results in

['one',
 ' two',
 ' three',
 'apple',
 ' pineapple',
 'frog',
 ' rabbit',
 ' dog',
 ' cat',
 ' horse']