如何在python中编写正则表达式来匹配这个？

Question

The code is as follows:

#coding=utf-8

import re

str = "The output is\n"
str += "1) python\n"
str += "A dynamic language\n"
str += "easy to learn\n"
str += "2) C++\n"
str += "difficult to learn\n"
str += "3244) PHP\n"
str += "eay to learn\n"


pattern = r'^[1-9]+\) .*'
print re.findall(pattern,str,re.M)

The output is

['1) python', '2) C++', '3244) PHP']

However, I want to split it like this:

['1) python\n'A dynamic language\n easy to learn\n'  2) C++\n difficult to learn\n', '3244) PHP\n easy to learn\n']

That is, ignore the first lines does not start with "number)",and when comes across a number, the following lines until next line start with a "number)" is consider to be the same group. How should I rewrite the pattern ?

Answer 1

>>> import re
>>> strs = 'The output is\n1) python\nA dynamic language\neasy to learn\n2) C++\ndifficult to learn\n3244) PHP\neay to learn\n'
>>> re.findall(r'\d+\)\s[^\d]+',strs)
['1) python\nA dynamic language\neasy to learn\n',
'2) C++\ndifficult to learn\n',
'3244) PHP\neay to learn\n']

Answer 2

你可以使用这个，允许数字，但后面没有右括号：

re.findall(r'\d+\)\s(?:\D+|\d+(?!\d*\)))*',str)

Answer 3

You need to add the python regex for whitespace into your pattern to account for the newlines.

Try this:

regex = r"[1-9]+\) .*\s.*"

\\s is the regex for any whitespace