How do I add a tag for numbers that are enclosed in brackets using python regex?

Search by:

(\d+)

      

        
        
        
      

    

and replace with:

<span>\1</span>

      

        
        
        
      

    

Demo Regex

Sample source:

import re
regex = r"(\d+)"
test_str = "strings[abc123def456]strings"
subst = "<span>\\1</span>"
result = re.sub(regex, subst, test_str, 0)
if result:
    print (result)