help me with this code : (

[Alice112233445566771122]

import sys
import os
import random

exam = sys.argv[1]
folder = sys.argv[2]

questions = []
for bank, number in zip(sys.argv[3::2], map(int, sys.argv[4::2])):
    qfiles = [
        os.path.join(dirpath, fname) 
        for dirpath, dirnames, filenames in os.walk(os.path.join(folder, bank)) 
        for fname in filenames 
        if os.path.splitext(fname)[-1].lower() == '.tex'
        ]
    for qfile in random.sample(qfiles, number):
        with open(qfile, 'r') as qfh:
            questions.append(qfh.read())

with open(exam, 'w') as efh:
    for question in questions:
        print(question, file=efh)

Reference: https://tex.stackexchange.com/questions/...710#499710

everytime I try to run it, it tells me index error or population size too large/negative.

Any advice or guidance will be greatly appreciated :)