Incrementing hexa strings in Python

Question

I'm trying in python to increment hexa decimal values that are represented in strings like '84B8042100FE', how can i increment this value with 1 to have '84B8042100FF' ?

thank you.

Answer 1

>>> s = '84B8042100FE'
>>> num = int(s, 16) + 1
>>> hex(num)[2:].upper()
'84B8042100FF'

And the much better method I always forget about - Thanks @Martijn Pieters

>>> '{:X}'.format(num)
'84B8042100FF'

Answer 2

In [15]: '{:X}'.format(int('84B8042100FE', 16)+1)
Out[15]: '84B8042100FF'