"Increment numbers in a string"

oneliner October 20, 2005 Reply

slightly more readable version:

last_number = re.compile(r'\d+(?=[^\d]*$)')

def increment(string):
....def increment_number(match):
........num_str = match.group(1)
........str( int(num_str) + 1).zfill( len(num_str) )

....return last_number.sub(increment_number, string)