lollol233的博客

A trick when you want to flatten a matrix X of shape (a,b,c,d) to a matrix X_flatten of shape (bcd, a) is to use:X_flatten = X.reshape(X.shape[0], -1).Treshape（行，列）可以根据指定的数值将数据转换为特定的行数和列数reshape(1,...

import numpy as np二维y = np.array([[1,2,3],[4,5,6]])print(y)[[1 2 3][4 5 6]]print(y.shape) # 展示行数，列数(2, 3)print(y.shape[0]) # 展示行数print(y.shape[1]) # 展示列数三维x = np.arr...