python - 如何用python的re省略字符串的某些部分？

Question

I have this string:

url = '/justicefor/404/1nirmala5.jpg'

I want to extract it as 404.jpg . I tried something like:

pattern = re.compile(
         r"./justicefor/(\d+/.\.\w+)",
         re.IGNORECASE
    )

But this selects the text between 404 and jpg too. How do I fix this?

I'm new to regular expressions so

Answer 1

Here is a solution,

Regex Demo

import re

re.sub("/justicefor/(.*)/.*(\.\w+)", r"\1\2", "/justicefor/404/1nirmala5.jpg")

---

'404.jpg'

Answer 2

You can use the os module

Ex:

import os

url = '/justicefor/404/1nirmala5.jpg'

path, ext = os.path.splitext(url)
print(os.path.basename(os.path.dirname(path)) + ext)  #--> 404.jpg