python mysql 插入特殊符号出错

sql2 = "insert into posts(key_int,title_desc,videos,ok) values (%s,%s,%s,%s)"
try:
cursor.execute(sql2, (kid,tdjson,ytbjson,1))
conn.commit()
sql1 = "update mainkeys set ok=1 where id = '%s'" % (kid)
cursor.execute(sql2)
conn.commit()
except:
conn.rollback()