Python 字符串列表的拆分列表

我有一个包含多个字符串的列表，希望有一个字符串列表

我尝试：

我的输出：

良好的输出：

那怎么办

>>> [phrase.split() for phrase in phrases]
[['hello', 'how', 'are', 'you'], ['the', 'book', 'is', 'good'], ['this', 'is', 'amazing'], ['i', 'am', 'angry']]

这将有助于：

list_of_list = [words.split() for words in phrases] 

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其他选项，同时删除标点符号，以防万一：

import re

phrases = ['hello! how are you?', 'the book is good!', 'this is amazing!!', 'hey, i am angry']
list_of_list_of_words = [ re.findall(r'\w+', phrase) for phrase in phrases ]

print(list_of_list_of_words)
#=> [['hello', 'how', 'are', 'you'], ['the', 'book', 'is', 'good'], ['this', 'is', 'amazing'], ['hey', 'i', 'am', 'angry']]

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另一种方法是将map与str.split一起使用：

输出：

[['hello', 'how', 'are', 'you'], ['the', 'book', 'is', 'good'], ['this', 'is', 'amazing'], ['i', 'am', 'angry']]

list_of_list = [words.split() for words in phrases] 

import re

phrases = ['hello! how are you?', 'the book is good!', 'this is amazing!!', 'hey, i am angry']
list_of_list_of_words = [ re.findall(r'\w+', phrase) for phrase in phrases ]

print(list_of_list_of_words)
#=> [['hello', 'how', 'are', 'you'], ['the', 'book', 'is', 'good'], ['this', 'is', 'amazing'], ['hey', 'i', 'am', 'angry']]

phrases = ['hello how are you', 'the book is good', 'this is amazing', 'i am angry']

splittedPhrases = list(map(str.split,phrases))

print(splittedPhrases)

[['hello', 'how', 'are', 'you'], ['the', 'book', 'is', 'good'], ['this', 'is', 'amazing'], ['i', 'am', 'angry']]