[FIXED] Extract the string inside a list if it contains specific pattern

Issue

I have a list like this:

ques = ['Normal adult dogs have how many teeth?', 'What is the most common training command taught to dogs?', 'What is this?;{;i1.png;};', 'Which part of cats is as unique as human fingerprints?', 'What is a group of cats called??', 'What is this?;{;i2.png;};']

As we can see that at ques[2] and ques[5] there is a text at end that follows a specific pattern ;{;*;};

That is the name of a img file stored in the directory. I want to extract those file name i.e. a list that contains :

Img_name = ['i1.png','i2.png']

Also after doing this i want to update ques and remove the pattern and img filename from it.

Solution

use regular expression;

import re

image_names = []
pattern = re.compile(r';{;([\w.]+);};')
for idx, item in enumerate(ques):
    result = re.search(pattern, item)
    if result:
        image_names.append(result.group(1))
        ques[idx] = re.sub(pattern, '', item)
        
print(ques)
print(image_names)

Answered By - 정도유