摘要："""线性代数""" import numpy as np # dot 两个数组的点积，即矩阵乘积 a = np.array([[1, 2], [3, 4]]) b = np.array([[11, 12], [13, 14]]) print(a) print(b) print(np.dot(a, 阅读全文

摘要："""矩阵""" import numpy as np a = np.arange(12).reshape(3, 4) print('原数组：') print(a) print('转置数组：') print(a.T) # 返回一个新的矩阵, 填充为随机数据 print(np.empty((2, 2) 阅读全文

摘要：import numpy as np if __name__ == '__main__': print(np.__version__) vec = np.array([1, 2, 3]) print(vec) vec[0] = '111' print(vec) # [111 2 3] # vec[0 阅读全文

摘要：import math class Vector: """向量""" @classmethod def zero(cls, dim): """dim长度的0向量""" return cls([0] * dim) def __init__(self, lst): self._values = list 阅读全文