Regex replace text between delimiters in python

Question

I need to fix some text that lies between delimiters for the following cases:
Case 1: {12345} (numbers between curlies) should become item_12345

Answer 1

This should get you started:

s = '{123} and [456]'

s = re.sub(r'\{(.+?)\}', r'foo_\1', s)
s = re.sub(r'\[(.+?)\]', r'bar_\1', s)

print s