[HackerRank] Bill Division

bill: an array of integers representing the cost of each item ordered
k: an integer representing the zero-based index of the item Anna doesn't eat
b: the amount of money that Anna contributed to the bill
If Brian did not overcharge Anna, print Bon Appetit on a new line; otherwise, print the difference (i.e., ) that Brian must refund to Anna. This will always be an integer.
import math
import os
import random
import re
import sys

# Complete the 'bonAppetit' function below.
# The function accepts following parameters:
#  1. INTEGER_ARRAY bill
#  2. INTEGER k
#  3. INTEGER b

def bonAppetit(bill, k, b):
    # Write your code here
    total = 0
    for i in range(len(bill)):
            total += bill[i]
    total = total // 2
    if(total == b):
        print('Bon Appetit')
        print(abs(total - b))