时间:1个小时左右
代码:200行左右
博客:1
知识点:疫情数据入库后的增删改查操作
import pymysql from day_04 import utils # 查询 def query(): # 获取数据库的连接 conn, cursor = utils.get_conn() sql = 'select * from student' cursor.execute(sql) connect = cursor.fetchall() print(connect) # 释放资源 utils.close(conn, cursor) # 插入数据 def insert(): # 获取数据库的连接 conn, cursor = utils.get_conn() sql = 'insert into student values(null,"siyu",17,"python",78)' cursor.execute(sql) # 提交事务 conn.commit() # 释放资源 utils.close(conn, cursor) # 更新数据 def updata(): # 获取数据库的连接 conn, cursor = utils.get_conn() sql = 'update student set name="wangwu" where id=2' cursor.execute(sql) conn.commit() # 释放资源 utils.close(conn, cursor) # 删除 def delete(): # 获取数据库的连接 conn, cursor = utils.get_conn() sql = 'delete from student where id=2' cursor.execute(sql) conn.commit() # 释放资源 utils.close(conn, cursor) if __name__ == "__main__": query() insert() # delete() # query()