how can I read line by line 4 strings in variable

Question

I would like to adapt a Python 3.10 script. Here I have the reading of a file where per line only one word is stored:

def readKeywords():
    with open(keyword_path, 'r') as f:
    return [keyword.strip() for keyword in f.readlines()]

Now I would like to change this function so that I can read 4 words which are stored in the file in the line.

E.g.

Walter Josef Jane Tom
apple banana tomato potato

the used variables should be keyword1 keyword2 keyword3 and keyword4.