"""
save image.py
二进制文件存储演示
"""import pymysql
"""
写操作实例
"""
#链接数据库
db = pymysql.connect(host='localhost',port=3306,user='root',password='123456',database='stu',charset='utf8')
#获取游标(操作数据库,执行sql语句)
cur = db.cursor()
#存储图片
with open('01.png','rb') as f:data = f.read()
try:sql = f"update class set image=%s \where name='Abby'; "cur.execute(sql,[data])#执行正确cur获取结果db.commit()
except Exception as e:db.rollback()#退回到commit执行之前的数据库状态print(e)#关闭数据库
cur.close()
db.close()