随笔分类 -  科学计算库

摘要：import numpy as np a = np.array([ [1,2,3], [4,5,6], [7,8,9] ]) b = np.zeros(3) c = np.ones(3) d = np.empty(3)print(a.ndim)print(a.shape)print(a.size) 阅读全文