def get_user_num():
    # This is bad practice, you should use python ABC or raise NotImplementedError instead.
    print('FIXME: Finish get_user_num()')
    return -1
    #raise NotImplementedError

def compute_avg(user_num1, user_num2):
    # This is bad practice, you should use python ABC or raise NotImplementedError instead.
    print('FIXME: Finish compute_avg()')
    return -1
    #raise NotImplementedError

user_num1 = 0
user_num2 = 0
avg_result = 0

user_num1 = get_user_num()
user_num2 = get_user_num()
avg_result = compute_avg(user_num1, user_num2)

print('Avg:', avg_result)