Question

这是我输出的一部分。我想找到此词典中列表的平均值：

{'Radial Velocity': {'number': [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 2.0, 2.0, 1.0, 1.0, 3.0, 3.0, 3.0, 1.0, 5.0, 5.0, 5.0, 5.0, 5.0, 3.0, 3.0, 3.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 2.0, 2.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 4.0, 4.0, 4.0, 4.0, 1.0, 1.0, 1.0, 2.0, 2.0, 2.0, 2.0, 1.0, 1.0, 2.0, 2.0, 1.0, 1.0, 2.0, 1.0, 3.0, 3.0, 3.0, 1.0, 2.0, 2.0, 1.0, 1.0, 1.0, 4.0, 4.0, 4.0, 4.0, 1.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 1.0, 3.0, 3.0, 3.0, 1.0, 1.0, 4.0, 4.0, 4.0, 4.0, 1.0, 1.0, 1.0, 2.0, 2.0, 2.0, 2.0, 2.0, 2.0, 2.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]}}

Answer 1

您可以使用mean()中的功能numpy：

import numpy as np
output = {'Radial Velocity': {'number': [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 2.0, 2.0, 1.0, 1.0, 3.0, 3.0, 3.0, 1.0, 5.0, 5.0, 5.0, 5.0, 5.0, 3.0, 3.0, 3.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 2.0, 2.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 4.0, 4.0, 4.0, 4.0, 1.0, 1.0, 1.0, 2.0, 2.0, 2.0, 2.0, 1.0, 1.0, 2.0, 2.0, 1.0, 1.0, 2.0, 1.0, 3.0, 3.0, 3.0, 1.0, 2.0, 2.0, 1.0, 1.0, 1.0, 4.0, 4.0, 4.0, 4.0, 1.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 1.0, 3.0, 3.0, 3.0, 1.0, 1.0, 4.0, 4.0, 4.0, 4.0, 1.0, 1.0, 1.0, 2.0, 2.0, 2.0, 2.0, 2.0, 2.0, 2.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]}}
print(np.mean(output['Radial Velocity']['number']))

输出：

2.1607142857142856

Answer 2

Python在其标准库中有一个statistics module。除其他有用的功能外，它还具有mean()函数，您可以向其传递列表并获得平均值：

from statistics import mean

mean(d['Radial Velocity']['number'])

Answer 3

以下是使用自定义代码解决问题的方法：

sumOfNumbers = 0
for number in dictionary['Radial Velocity']['number']:
    sumOfNumbers += number

avg = sumOfNumbers / len(dictionary['Radial Velocity']['number'])
print(avg)

在Python中计算字典中列表的平均值

3 个答案: