如何使用python regexp从字符串中提取图像名称？

Question

Having a text like this:

body = """Some junk texts here.
<img src="/images/15244/somerandomname.jpg" class="news-img">
More texts here"""

I'm wondering how can I extract somerandomname.jpg using python regexp?

What I came up with is this:

import re
regex = re.findall('/images/(\d+)/(\w+).jpg', body)

But it does return an empty list.

Answer 1

re.findall returns either the entire matches if no capturing groups ( (...) ) defined in the pattern, or captured groups if these defined. Since you've got capturing groups, the latter takes place.

Remove capturing groups to get the entire match:

regex = re.findall('/images/\d+/\w+.jpg', body)

Demo: https://ideone.com/n1f9R8

Answer 2

you can use

regex = re.findall('/images/(\d+)/([^"]+)', body)
image_src = regex[0][1]

Answer 3

you just need to group only image name part.

check this expression it will also work for all other extension ie jpg,png,ttf etc...

re.findall('/images/\\d+/(\\w+.\\w{3,4})', body)
output: ['somerandomname.jpg']

Answer 4

Your code works, and since you just want to capture the name this will work.

import re
body = """Some junk texts here.
<img src="/images/15244/somerandomname.jpg" class="news-img">
More texts here"""
regex = re.findall(r'/images/\d+/(\w+.jpg)', body)
print regex