Python正则表达式根据数字后面的逗号进行分割

Question

我有一个大文件，需要将其加载到字符串列表中。每个元素将包含文本，直到紧跟在数字后面的“,”

例如:

this is some text, value 45789, followed by, 1245, and more text 78965, more random text 5252,

这应该变成:

["this is some text, value 45789", "followed by, 1245", "and more text 78965", "more random text 5252"]

我目前正在做re.sub(r'([0-9]+),','~', <input-string>)然后分割“~”(因为我的文件不包含~)，但这会抛出逗号之前的数字..有什么想法吗？

Answer 1

您可以使用re.split与 positive look-behind assertion :

>>> import re
>>> 
>>> text = 'this is some text, value 45789, followed by, 1245, and more text 78965, more random text 5252,'
>>> re.split(r'(?<=\d),', text)
['this is some text, value 45789',
 ' followed by, 1245',
 ' and more text 78965',
 ' more random text 5252',
 '']