在给定有限的预算约束和每个值的成本的情况下，我如何计算numpy数组中还剩下多少可选择的值

import numpy as np

def calculate_remaining_choices(arr, budget):
    arr_length = len(arr)
    average_cost = budget / arr_length

    remaining_choices = []
    for value in arr:
        if value <= average_cost:
            remaining_choices.append(value)

    num_remaining_choices = len(remaining_choices)
    return num_remaining_choices

# 示例用法
arr = np.array([1, 2, 3, 4, 5])
budget = 10
result = calculate_remaining_choices(arr, budget)
print("剩余可选择的值数量：", result)