hanxuwerewolf的博客

import numpy as np a = np.arange(4, dtype=float) print(a) b = a c = a d = b a[0] = 0.3 print(a) print(b) print(c) print(d) print(b is a) b = a.copy() # 深度拷贝 a[2] = 0.4 print(a) print(b) print(...

import numpy as np a = np.arange(12).reshape((3, 4)) print(a) print("纵向分割（按照列进行分割）：\n", np.split(a, 2, axis=1)) print("横向分割（按照行进行分割）：\n", np.split(a, 3, axis=0)) print("不等量的分割：\n", np.array_spli...

import numpy as np a = np.array([1, 1, 1]) b = np.array([2, 2, 2]) print("a:\n", a) print("b:\n", b) c = np.vstack((a, b)) print("a和b上下合并：\n", np.vstack((a, b))) # vertical stack上下合并 print(c.shape...

import numpy as np a = np.arange(3, 15) print(a) print("找到a矩阵的第三个值：", a[2]) a = a.reshape(3, 4) print("矩阵a变成（3， 4）：\n", a) print("找到索引第2行第3个：", a[1][2], a[1, 2]) # 两种表示方式 print("第二行的所有数：", a[1, ...

import numpy as np a = np.arange(2, 14).reshape((3, 4)) print("矩阵a：\n", a) print("求出矩阵a最小值的索引：", np.argmin(a)) print("求出矩阵a最大值的索引：", np.argmax(a)) """ np.mean()计算平均数 np.average()计算加权平均数 """ prin...

import numpy as np a = np.array([10, 20, 30, 40]) b = np.arange(4) print(a, b) print("逐个元素相减") c = a - b print(c) print("逐个元素相加") d = a + b print(d) print("判断数组中小于3的元素") print(b) print(b < 3) ...

import numpy as np a = np.array([1, 23, 4], dtype=np.float) # dtype设置格式 print(a) print(a.dtype) print("定义一个二维矩阵") b = np.array([[1, 2, 3], [3, 4, 5]]) print(b) print("这生成一个全部为零的矩阵") ...

import numpy as np """ [[1, 2, 3]. [2, 3, 4]] 这是一个长为3个单位，高为2个单位的矩阵 """ array = np.array([[1, 2, 3],[2, 3, 4]]) # 将列表转换成数组 print(array) print("number of dim:", array.ndim) # 维度 print("shape:"...