sunflower_Yolanda的博客

shape >>> import numpy as np >>> a = np.array([1, 2, 3, 4]) >>> a.shape (4,) >>> a.shape[0] 4 >>> c = np.array([[1, 2, 3, 4],[4, 5, 6, 7], [7, 8, 9, 10]]) >>> c.shape (3, 4) >>> c.shape[0]

IDE安装： Ubuntu14.04安装PyCharm