mysql数据库自增去重！

db= pymysql.connect('localhost','root','root','document',charset="utf8")

cursor= db.cursor()

sql= '''select pic FROM TongCheng_58;'''

cursor.execute(sql)

detail_list= cursor.fetchall()

one_typle= detail_list[5]

print(one_typle)

pic= 'pic2.58cdn.com.cn/mobile/small/n_v2b7d864642c6240f19278d1b4837520a1.jpg?w=294&h=220&crop=2'

#pic_tuple= tuple(pic)

pic_tuple= (pic,),

lll= set(pic_tuple).issubset(set(detail_list))

if lll!= True:

    print("没在数据库里!")

print("*" * 100)

else:

    print("已经在数据库里")

print("-" * 100)