Generate Random Alphabet using Python

I am working on a application, where in on enrollment of a participant, we need to generate a random identifier, which is a combination of string and numbers, which need to be stored along with the regular sequence number.

I can successfully fetch random numbers, using the following code snippet, but facing difficulties in getting random string, which can be concatenate to generate the random identified expected.

import random
numpart = random.randint(0,99999)

Please let me know whether this is feasible or not, and if yes, pls help !