摘要：http://blog.sina.com.cn/s/blog_6babbcb801019njz.html 阅读全文

摘要：a = np.arange(3) # a.shape = (3,) b = a.reshape((3,1)) # b.shape = (3,1) b2 = a.reshape((-1,1)) # b2.shape = (3,1) c = b.reshape((3,)) # c.shape = (3, 阅读全文