如何使用Python生成具有特定平均值的范围内的数字?

本文介绍了如何使用Python生成具有特定平均值的范围内的数字?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

例如，我想生成22个介于20和46之间的数字，平均值为27.并且我希望这些数字尽可能覆盖范围.

For example I would like to generate 22 numbers between 20 and 46 with an average value of 27. And I would like the numbers to cover the range as well as possible.

这些数字不必是随机的.

These numbers don't need to be random.

推荐答案

警告:这不是最佳解决方案，但可以与您的输入参数一起快速运行:

Warning: this is not the optimal solution but it works quite fast with your input parameters:

import random def gen_avg(expected_avg=27, n=22, a=20, b=46): while True: l = [random.randint(a, b) for i in range(n)] avg = reduce(lambda x, y: x + y, l) / len(l) if avg == expected_avg: return l for i in range(100): print gen_avg()

在我的笔记本电脑中，它将在〜2.5s内给出100个随机序列:

In my laptop will give 100 random sequences in ~2.5s:

[21, 20, 20, 23, 25, 24, 29, 22, 42, 23, 31, 26, 30, 25, 29, 38, 20, 31, 46, 28, 41, 20] [20, 30, 39, 26, 24, 31, 35, 36, 22, 22, 20, 32, 23, 21, 42, 32, 23, 24, 26, 28, 29, 25] [23, 43, 21, 31, 44, 24, 24, 20, 27, 31, 28, 22, 26, 33, 25, 30, 21, 26, 33, 20, 31, 25] [36, 28, 24, 29, 32, 21, 36, 28, 24, 27, 24, 22, 28, 28, 33, 21, 20, 32, 23, 30, 35, 21] [21, 34, 25, 32, 20, 37, 31, 20, 46, 25, 21, 25, 35, 36, 21, 26, 21, 35, 24, 21, 30, 28] [28, 23, 43, 22, 20, 23, 30, 41, 25, 32, 20, 21, 21, 30, 26, 22, 46, 40, 27, 26, 26, 21] [21, 26, 38, 27, 42, 36, 43, 21, 29, 32, 22, 29, 26, 20, 23, 22, 21, 38, 23, 21, 21, 23] [28, 21, 27, 34, 38, 21, 25, 37, 27, 22, 36, 38, 27, 20, 32, 35, 20, 24, 31, 22, 24, 24] [28, 31, 23, 26, 36, 23, 30, 36, 32, 23, 20, 25, 23, 25, 25, 40, 21, 27, 21, 25, 28, 38] [30, 24, 24, 25, 38, 27, 35, 31, 21, 31, 27, 22, 25, 25, 39, 31, 22, 23, 30, 29, 20, 23] [25, 21, 42, 24, 24, 31, 22, 34, 32, 21, 23, 27, 20, 35, 31, 23, 26, 33, 20, 23, 22, 43] [23, 23, 20, 40, 27, 22, 22, 41, 20, 21, 45, 26, 22, 28, 29, 39, 24, 23, 26, 34, 20, 38] [22, 44, 27, 36, 29, 22, 24, 35, 30, 20, 20, 31, 38, 23, 20, 31, 25, 29, 30, 21, 24, 28] [27, 30, 21, 28, 39, 30, 33, 33, 25, 21, 26, 33, 33, 24, 31, 20, 24, 25, 22, 27, 28, 20] [23, 28, 24, 20, 35, 29, 33, 22, 23, 21, 31, 39, 32, 22, 24, 39, 22, 21, 29, 32, 34, 25] [38, 25, 20, 22, 21, 44, 32, 20, 26, 20, 21, 29, 25, 20, 37, 27, 33, 23, 20, 39, 28, 27] [29, 22, 30, 20, 31, 23, 23, 24, 28, 28, 46, 27, 24, 23, 21, 35, 20, 21, 45, 29, 27, 34] [21, 29, 21, 33, 38, 44, 21, 20, 41, 30, 26, 23, 23, 29, 21, 32, 20, 29, 32, 29, 21, 26] [21, 20, 24, 40, 30, 30, 31, 27, 20, 34, 28, 37, 31, 20, 38, 43, 25, 25, 21, 20, 27, 22] [27, 35, 30, 21, 36, 37, 41, 21, 23, 24, 23, 32, 23, 25, 20, 23, 36, 40, 30, 24, 20, 24] [39, 30, 30, 21, 26, 23, 20, 25, 36, 22, 23, 29, 23, 42, 20, 23, 32, 20, 30, 36, 25, 31] [24, 24, 25, 41, 20, 27, 35, 31, 21, 24, 31, 36, 20, 25, 22, 32, 31, 30, 21, 22, 33, 25] [22, 34, 33, 20, 29, 24, 34, 27, 27, 31, 20, 24, 22, 33, 36, 22, 21, 31, 21, 38, 21, 44] [20, 43, 29, 23, 22, 32, 20, 21, 26, 23, 26, 33, 34, 22, 26, 20, 38, 21, 29, 32, 24, 33] [23, 38, 39, 35, 21, 33, 25, 39, 33, 28, 23, 20, 22, 22, 25, 30, 20, 26, 28, 31, 24, 30] [21, 36, 32, 42, 25, 25, 20, 46, 24, 22, 22, 22, 33, 32, 22, 29, 24, 26, 30, 23, 22, 21] [25, 34, 20, 23, 44, 21, 40, 21, 25, 20, 26, 25, 44, 20, 24, 32, 21, 23, 31, 21, 43, 22] [34, 31, 23, 20, 25, 30, 22, 23, 30, 22, 31, 21, 41, 42, 21, 22, 36, 20, 26, 24, 31, 32] [27, 27, 35, 34, 31, 36, 21, 21, 24, 39, 22, 29, 29, 20, 20, 46, 23, 30, 27, 24, 28, 21] [28, 37, 30, 31, 38, 23, 21, 20, 21, 32, 29, 24, 32, 20, 20, 21, 28, 20, 32, 41, 25, 40] [27, 25, 24, 46, 23, 24, 26, 28, 30, 23, 23, 27, 38, 20, 44, 21, 27, 25, 20, 23, 26, 28] [20, 28, 24, 33, 25, 22, 28, 27, 22, 27, 42, 25, 43, 27, 20, 26, 29, 33, 29, 24, 36, 23] [39, 31, 27, 20, 23, 25, 22, 22, 24, 26, 25, 42, 21, 22, 21, 21, 28, 24, 44, 31, 35, 34] [20, 20, 31, 30, 41, 30, 40, 20, 28, 20, 21, 25, 23, 30, 28, 25, 29, 21, 28, 28, 38, 24] [35, 37, 30, 20, 24, 25, 36, 21, 23, 29, 25, 23, 21, 27, 22, 44, 41, 24, 33, 30, 22, 20] [22, 22, 25, 20, 22, 29, 25, 25, 21, 33, 23, 20, 21, 42, 39, 32, 33, 30, 46, 34, 21, 22] [26, 25, 27, 35, 30, 39, 20, 26, 43, 20, 29, 33, 23, 27, 35, 21, 20, 36, 24, 27, 21, 28] [20, 30, 24, 31, 36, 23, 24, 46, 30, 28, 24, 25, 24, 22, 20, 33, 20, 21, 24, 23, 39, 27] [20, 22, 33, 22, 33, 22, 38, 24, 29, 36, 23, 31, 26, 24, 28, 28, 26, 28, 43, 24, 25, 20] [36, 26, 24, 24, 24, 33, 21, 28, 27, 29, 31, 31, 21, 27, 25, 24, 34, 20, 33, 37, 23, 30] [25, 33, 24, 27, 30, 35, 25, 30, 23, 23, 20, 20, 28, 30, 29, 38, 25, 25, 32, 21, 25, 33] [30, 21, 27, 33, 21, 43, 23, 23, 25, 29, 23, 38, 28, 24, 21, 44, 22, 31, 32, 21, 20, 27] [21, 33, 26, 26, 33, 27, 26, 32, 41, 31, 25, 29, 33, 22, 26, 38, 24, 22, 21, 28, 21, 21] [26, 28, 31, 20, 38, 20, 26, 23, 24, 24, 30, 21, 21, 33, 26, 33, 38, 28, 40, 24, 21, 26] [21, 27, 30, 22, 24, 28, 38, 27, 20, 23, 41, 20, 26, 41, 26, 24, 29, 22, 20, 43, 21, 42] [22, 28, 21, 25, 25, 46, 29, 27, 24, 34, 24, 27, 23, 23, 34, 21, 37, 26, 20, 44, 28, 24] [32, 27, 21, 35, 28, 37, 21, 32, 23, 20, 21, 20, 31, 21, 32, 24, 35, 26, 42, 35, 22, 24] [22, 36, 41, 35, 27, 20, 25, 21, 28, 32, 31, 30, 23, 26, 23, 26, 28, 33, 23, 35, 20, 23] [28, 24, 27, 39, 37, 25, 21, 29, 36, 27, 24, 24, 26, 27, 37, 27, 28, 23, 27, 21, 22, 26] [32, 33, 24, 31, 22, 35, 39, 20, 39, 39, 22, 21, 23, 28, 34, 23, 20, 21, 35, 24, 23, 22] [25, 20, 20, 25, 28, 23, 37, 30, 34, 27, 22, 20, 41, 22, 22, 23, 42, 27, 39, 25, 22, 24] [20, 36, 22, 21, 21, 38, 20, 45, 36, 28, 23, 23, 35, 26, 20, 30, 31, 28, 33, 22, 25, 31] [30, 23, 21, 45, 20, 31, 35, 21, 22, 24, 29, 32, 34, 30, 23, 31, 20, 20, 31, 35, 29, 20] [22, 21, 22, 32, 42, 24, 35, 22, 26, 21, 28, 23, 24, 21, 31, 20, 27, 39, 42, 21, 37, 33] [26, 28, 24, 20, 42, 23, 22, 20, 22, 33, 24, 25, 24, 28, 38, 26, 44, 28, 31, 20, 28, 25] [25, 42, 32, 20, 25, 20, 27, 22, 21, 20, 31, 28, 21, 31, 25, 25, 46, 28, 30, 41, 25, 20] [20, 27, 28, 26, 34, 23, 20, 22, 34, 20, 36, 30, 21, 23, 26, 23, 31, 37, 23, 34, 40, 29] [28, 30, 22, 21, 20, 35, 20, 24, 23, 24, 34, 33, 37, 34, 24, 21, 24, 21, 41, 32, 22, 30] [21, 20, 21, 28, 24, 42, 36, 26, 29, 33, 26, 22, 33, 28, 26, 31, 20, 22, 29, 32, 27, 28] [23, 41, 24, 39, 22, 23, 25, 21, 24, 35, 20, 27, 31, 43, 34, 29, 24, 22, 23, 21, 37, 21] [20, 29, 32, 21, 27, 25, 32, 36, 24, 34, 33, 31, 25, 21, 29, 26, 21, 32, 23, 33, 20, 29] [21, 32, 22, 26, 40, 40, 23, 28, 26, 25, 31, 21, 20, 37, 30, 30, 25, 35, 27, 24, 24, 21] [25, 25, 27, 21, 27, 23, 20, 39, 20, 43, 29, 21, 38, 27, 30, 23, 24, 29, 20, 24, 36, 30] [26, 20, 22, 25, 28, 22, 21, 29, 30, 37, 23, 39, 20, 34, 33, 23, 25, 30, 27, 41, 27, 26] [29, 20, 32, 22, 26, 27, 21, 20, 27, 26, 22, 42, 28, 24, 26, 23, 40, 24, 27, 42, 23, 44] [21, 38, 25, 26, 35, 28, 21, 40, 37, 28, 25, 23, 26, 22, 22, 21, 46, 29, 23, 23, 21, 32] [39, 23, 20, 37, 26, 22, 30, 21, 25, 25, 32, 20, 39, 20, 33, 23, 24, 32, 38, 22, 33, 27] [21, 21, 21, 20, 34, 20, 27, 36, 25, 20, 20, 26, 34, 40, 32, 32, 30, 22, 28, 29, 36, 35] [37, 30, 23, 20, 21, 38, 26, 21, 41, 34, 33, 26, 36, 26, 25, 34, 34, 20, 24, 21, 20, 25] [28, 24, 25, 29, 41, 24, 24, 29, 34, 37, 20, 29, 21, 30, 21, 28, 33, 20, 22, 43, 27, 20] [35, 36, 20, 29, 26, 30, 26, 26, 34, 22, 24, 25, 21, 35, 34, 34, 25, 21, 23, 31, 24, 20] [24, 25, 22, 22, 31, 28, 38, 42, 33, 24, 37, 27, 21, 42, 22, 28, 25, 20, 21, 25, 22, 29] [26, 38, 33, 40, 22, 22, 21, 26, 29, 26, 23, 25, 35, 21, 27, 23, 35, 21, 43, 29, 20, 29] [26, 31, 25, 20, 20, 21, 25, 25, 24, 28, 22, 30, 22, 22, 40, 37, 29, 46, 20, 38, 22, 24] [24, 26, 23, 22, 34, 26, 30, 20, 24, 21, 32, 24, 24, 31, 31, 27, 28, 31, 32, 45, 25, 33] [30, 32, 24, 27, 24, 21, 25, 22, 23, 39, 39, 22, 27, 23, 37, 23, 32, 23, 38, 21, 36, 22] [27, 23, 22, 24, 28, 42, 26, 33, 28, 20, 20, 35, 22, 20, 31, 27, 34, 23, 32, 36, 23, 38] [31, 35, 23, 28, 21, 28, 37, 20, 38, 34, 27, 20, 24, 27, 22, 26, 20, 29, 35, 31, 28, 21] [28, 21, 33, 31, 24, 29, 20, 23, 25, 22, 28, 27, 30, 25, 29, 28, 26, 22, 38, 39, 30, 33] [23, 36, 41, 26, 23, 29, 29, 45, 20, 23, 34, 21, 22, 39, 35, 24, 20, 24, 24, 25, 23, 28] [25, 25, 21, 32, 44, 24, 32, 28, 33, 21, 22, 38, 32, 22, 25, 29, 22, 27, 29, 26, 26, 32] [35, 28, 35, 24, 27, 34, 25, 30, 25, 42, 29, 26, 20, 36, 25, 25, 20, 20, 23, 21, 31, 34] [44, 23, 20, 25, 24, 28, 20, 23, 38, 21, 24, 28, 35, 30, 20, 45, 23, 28, 39, 26, 23, 25] [22, 25, 22, 45, 21, 22, 31, 37, 42, 28, 21, 24, 26, 25, 30, 25, 20, 36, 23, 25, 23, 29] [32, 21, 28, 20, 20, 41, 25, 20, 46, 21, 38, 31, 25, 26, 21, 30, 20, 31, 39, 24, 22, 24] [34, 24, 23, 26, 33, 20, 26, 26, 24, 20, 24, 25, 21, 29, 31, 30, 39, 34, 28, 27, 25, 41] [26, 36, 20, 27, 23, 23, 20, 27, 32, 23, 24, 36, 34, 23, 24, 43, 25, 25, 33, 24, 31, 31] [23, 21, 28, 20, 33, 46, 20, 43, 21, 24, 28, 21, 22, 34, 38, 25, 20, 20, 20, 25, 44, 32] [30, 35, 26, 21, 28, 20, 21, 22, 24, 35, 23, 22, 21, 26, 24, 31, 41, 37, 27, 20, 43, 25] [34, 42, 21, 20, 26, 21, 40, 20, 41, 21, 21, 23, 29, 22, 21, 26, 30, 25, 32, 29, 39, 27] [31, 44, 40, 27, 22, 21, 44, 21, 30, 26, 20, 34, 22, 20, 20, 20, 29, 36, 22, 21, 22, 38] [21, 43, 46, 28, 32, 22, 23, 21, 24, 21, 28, 21, 20, 33, 21, 24, 36, 22, 23, 28, 45, 32] [21, 22, 24, 39, 21, 25, 25, 20, 23, 20, 22, 26, 40, 39, 22, 28, 41, 38, 20, 20, 33, 33] [34, 22, 26, 23, 28, 20, 32, 25, 24, 20, 39, 28, 41, 24, 29, 32, 24, 33, 23, 34, 24, 23] [22, 39, 36, 22, 24, 20, 28, 23, 30, 39, 23, 33, 37, 25, 27, 20, 23, 27, 34, 31, 25, 20] [34, 20, 20, 22, 26, 21, 26, 40, 23, 20, 42, 23, 31, 25, 46, 31, 27, 28, 22, 31, 34, 23] [24, 29, 39, 24, 39, 26, 25, 25, 29, 23, 27, 20, 46, 21, 27, 25, 20, 41, 24, 31, 25, 22] [42, 25, 23, 30, 22, 23, 37, 20, 29, 32, 28, 22, 35, 36, 22, 20, 27, 39, 21, 20, 22, 32] [24, 26, 37, 44, 26, 23, 21, 23, 34, 33, 36, 22, 22, 22, 21, 27, 35, 24, 22, 44, 21, 20] [24, 27, 22, 30, 20, 27, 21, 24, 31, 22, 30, 33, 35, 24, 23, 20, 32, 28, 30, 44, 26, 29]