Question

I have the following string

http://example.com/variable/controller/id32434242423423234?param1=321&param2=4324342

How in best way to extract id value, in this case – 32434242423423234

Regardz,
Mladjo

Answer 1

You could just use a regular expression, e.g.:

import re

s = "http://example.com/variable/controller/id32434242423423234?param1=321&param2=4324342"

m = re.search(r'controller/id(\d+)\?',s)
if m:    
    print "Found the id:", m.group(1)

If you need the value as an number rather than a string, you can use int(m.group(1)). There are plenty of other ways of doing this that might be more appropriate, depending on the larger goal of your code, but without more context it’s hard to say.