python 2.7 regular expression match with \r\n in string

Question

Wondering if any ways to match string contains \r \n? It seems the same regular expression match does not work if input string content contains \r \n. Using Python 2.7.

works pretty good,

import re

content = '{(1) hello (1)}'
reg = '{\(1\)(.*?)\(1\)}'
results = re.findall(reg, content)

print results[0]

prog = re.compile(reg)
results = prog.findall(content)

print results[0]

will not work when add \r \n

import re

content = '{(1) hello \r\n (1)}'
reg = '{\(1\)(.*?)\(1\)}'
results = re.findall(reg, content)

print results[0]

prog = re.compile(reg)
results = prog.findall(content)

print results[0]

regards, Lin

@TigerhawkT3 .. This is related to capturing white spaces..am I wrong? — Iron Fist, Aug 06 '16 at 05:30

score 3 · Accepted Answer · answered Aug 06 '16 at 05:23

This works:

>>> import re
>>> 
>>> content = '{(1) hello \r\n (1)}'
>>> reg = '{\(1\)(.*?)\(1\)}'
>>> results = re.findall(reg, content, re.DOTALL)
>>> 
>>> print results[0]
 hello 

>>> 
>>> prog = re.compile(reg, re.DOTALL)
>>> results = prog.findall(content)
>>> 
>>> print results[0]
 hello 

>>>

From Python Docs:

'.' (Dot.) In the default mode, this matches any character except a newline. If the DOTALL flag has been specified, this matches any character including a newline.

Nice, Nehal, vote up. Will try and if no issues, will mark your reply as answer. — Lin Ma, Aug 06 '16 at 05:28

python 2.7 regular expression match with \r\n in string

1 Answers1