weixin_40338379的博客

数组维度数组与维度axis与数组与维度np.expand_dims(),np.newaxis() 图例

import osos.environ['TF_CPP_MIN_LOG_LEVEL'] = '2' # 不显示等级2以下的提示信息import matplotlib.pyplot as pltimport matplotlib.image as mpimgtrain_horse_dir = os.path.join('E:/Python/pythonProject_1/horse-or-human/tmp/horse-or-human/horses')train_human_dir = o.

a=[[1,2,3,4,5,6,7], [2,3,4,5,6,7,8], [3,4,5,6,7,8,9]]#====a[m:]表示从第m+1个行开始往下返回所有行===#>>> a[0:][[1, 2, 3, 4, 5, 6, 7], [2, 3, 4, 5, 6, 7, 8], [3, 4, 5, 6, 7, 8, 9]]>>> a[1:][[2, 3, 4, 5, 6, 7, 8], [3, 4, 5, 6, 7, 8, 9]]&.