正则表达式以匹配两个不同分隔符（例如“ <”和“>”）之间的字符串

Question

I want to split my text into contexts and captures where I have rules like:

<abc> e f <ghi>
<abc> e f
e f <ghi>

Here I want to create rules that only affect strings inside of the markers <> and example would be the output:

<aabbcc> e f <gghhii>
<axyzbxyzcxyz> e f 
e f <g_h_i_>

using line.split('')[i] doesn't cut it because I have two different separators

Answer 1

You can use re.sub to replace the parts within <...> , using a replacement callback function:

def replace_function(match):
    return '<' + ''.join(c + c for c in match.group(1)) + '>'

text = re.sub(r"<(.*?)>", replace_function, text)

This will duplicate the chars in each of the tags, but you can extend the function any way you want to perform more complex substitutions.