python+tensorflow CNN卷积神经网络手写字体识别

导入所需的库模块：import osimport cv2import numpy as npimport tensorflow as tf2import matplotlib.pyplot as pltimport tensorflow.compat.v1 as tfimport tensorflow.compat.v1 as tf这句话是为了将tensorflow 2.x转为1.x，tensorflow1.x更能表现网络结构import os是调用系统，可有可无，为了不显示警告内容所