我需要一些幫助來遍歷 numpy 函式的回圈。首先，我開始計算我正在尋找的所有值并將它們存盤在字典中。
calculations[keys[0]] = [np.mean(matrix, axis=0),np.mean(matrix, axis=1),np.mean(list)]
calculations[keys[1]] = [np.var(matrix, axis=0),np.var(matrix, axis=1),np.var(list)]
calculations[keys[2]] = [np.std(matrix, axis=0),np.std(matrix, axis=1),np.std(list)]
calculations[keys[3]] = [np.max(matrix, axis=0),np.max(matrix, axis=1),np.min(list)]
calculations[keys[4]] = [np.min(matrix, axis=0),np.min(matrix, axis=1),np.max(list)]
calculations[keys[5]] = [np.sum(matrix, axis=0),np.sum(matrix, axis=1),np.sum(list)]
然后我想有沒有更好的戰爭來做到這一點，通過一個回圈。我嘗試了一些 f 字串的東西，但沒有成功。
list = [i for i in range(9)]
matrix = np.reshape(list,(3,3))
keys = ['mean','variance','standard deviation', 'max','min','sum']
operator = ['np.mean','np.var','np.std','np.max','np.min','np.sum']
calculations = {}
for i in range[len(keys)]:
calculations[keys[i]] = [f'{operater[0]}'(matrix, axis=0),f'{operater[0]}'(matrix, axis=1),f'{operater[0]}'(list)]
有辦法嗎？
提前致謝
uj5u.com熱心網友回復：
list是關鍵字，因此不應用作變數，此外，您需要對 使用()圓括號range，而不是方括號[]。在 Python 中，函式是一等成員，因此您可以將它們傳遞并保存在串列中。只需這樣做：
import numpy as np
numbers = list(range(9))
matrix = np.reshape(numbers,(3,3))
keys = ['mean','variance','standard deviation', 'max','min','sum']
operator = [np.mean, np.var, np.std, np.max, np.min, np.sum]
calculations = {}
for i in range(len(keys)):
calculations[keys[i]] = [operator[i](matrix, axis=0),operator[i](matrix, axis=1),operator[i](numbers)]
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