import pymysql #创建连接 conn = pymysql.connect(host="127.0.0.1",port = 3306,user='root',passwd='wangwei520',db='test',charset='utf8'); #创建游标 cursor = conn.cursor() #执行语句 # inp = input("输入：") # ll = [[9,9,99],[8,8,88]] #插入数据只能值元组或者是列表 单个插入用execute，多个插入用executemany # cursor.executemany('insert into score(student_id,corse_id,number)values(%s,%s,%s)',ll) #修改 # cursor.execute("update score set student_id = 21,corse_id = 21,number = 21 where sid = 25 or sid =24 ") #删除 # cursor.execute("delete from score where sid = %s",25) #查找 cursor.execute("select * from course") # cur = cursor.fetchall() cur = cursor.fetchone() # cur = cursor.fetchmany(2) print(cur) cur = cursor.fetchone() print(cur) # cursor.scroll(-1,mode="relative") cursor.scroll(0,mode="absolute") cur = cursor.fetchone() print(cur) #保存连接并执行 conn.commit() #关闭连接 cursor.close() #游标关闭 conn.close() #连接关闭