使用预定义字符分隔字符串

Question

我有一个文字作为 Hi, my name is Will, And i am from Canada. I have 2 pets. One is a dog and the other is a Zebra. Ahoi! Thanks.

我想把这个句子.和'!' 分开,我怎么能这样做.我也想知道句子分裂的特征.

例如,结果应该是:

例1:

Hi, my name is Will, And i am from Canada || The sentence was split with .

例2:

Ahoi! || The sentence was split with !

我怎样才能做到这一点？我到目前为止的工作:

print (text.split('.'))- 这只会打破句子.,我无法确定它用于分割的字符.

Answer 1

你可以使用re.split():

re.split('[.!]', text)

这会拆分[...]字符类中的任何字符:

>>> import re
>>> text = 'Hi, my name is Will, And i am from Canada. I have 2 pets. One is a dog and the other is a Zebra. Ahoi! Thanks.'
>>> re.split('[.!]', text)
['Hi, my name is Will, And i am from Canada', ' I have 2 pets', ' One is a dog and the other is a Zebra', ' Ahoi', ' Thanks', '']

您可以对拆分表达式进行分组,以将字符包含在输出中的单独列表元素中:

>>> re.split('([.!])', text)
['Hi, my name is Will, And i am from Canada', '.', ' I have 2 pets', '.', ' One is a dog and the other is a Zebra', '.', ' Ahoi', '!', ' Thanks', '.', '']

要将标点符号附加到句子上,请re.findall()改用:

>>> re.findall('[^.!]+?[.!]', text)
['Hi, my name is Will, And i am from Canada.', ' I have 2 pets.', ' One is a dog and the other is a Zebra.', ' Ahoi!', ' Thanks.']