时间:2020-09-28 python教程 查看: 834
Django中(原生mysql封装)
1.函数封装
import pymysql
# 查 所数据
def get_all(sql):
conn = pymysql.connect(host="localhost", user="root", password="root", database="db6")
cur = conn.cursor(cursor=pymysql.cursors.DictCursor)
cur.execute(sql)
res = cur.fetchall()
cur.close()
conn.close()
return res
# 查 一行数据
def get_one(sql,args):
conn = pymysql.connect(host="localhost", user="root", password="root", database="db6")
cur = conn.cursor(cursor=pymysql.cursors.DictCursor)
cur.execute(sql,args)
res = cur.fetchone()
cur.close()
conn.close()
return res
# 增 删 改 都要提交 commit
def get_mif(sql,args):
conn = pymysql.connect(host="localhost", user="root", password="root", database="db6")
cur = conn.cursor(cursor=pymysql.cursors.DictCursor)
cur.execute(sql,args)
conn.commit()
cur.close()
conn.close()
# 增 删 改 都要提交 commit
# 添加并且带返回值
def get_create(sql,args):
conn = pymysql.connect(host="localhost", user="root", password="root", database="db6")
cur = conn.cursor(cursor=pymysql.cursors.DictCursor)
cur.execute(sql,args)
conn.commit()
cur.close()
conn.close()
return cur.lastrowid
# python插入记录后取得主键id的方法(cursor.lastrowid和conn.insert_id())
# 增 删 改 都要提交 commit
# 批量加入 以元祖的形式传参数 就是添加几次次提交一次
def mul_mode(sql, args):
conn = pymysql.connect(host="localhost", user="root", password="root", database="db6")
cur = conn.cursor(cursor=pymysql.cursors.DictCursor)
# self.cursor.executemany("insert into user (id,name) values (%s,%s)",[(1,"aaa"),(2,"bbb"),(3,"ccc")]) 传参方式
cur.executemany(sql, args)
conn.commit()
cur.close()
conn.close()
2.对象封装
import pymysql
# 注意 args 参数可以传空值[]
class Mysqls(object):
def __init__(self):
# 读取配置文件
self.connect()
def connect(self):
self.conn = pymysql.connect(host="localhost", user="root", password="root", database="db6") # 可以把主机连接等写入配置文件 等
self.cursor=self.conn.cursor(cursor=pymysql.cursors.DictCursor)
# 获取所以数据
def get_all(self,sql,args):
self.cursor.execute(sql,args)
res = self.cursor.fetchall()
return res
# 获取一行数据
def get_one(self,sql,args):
self.cursor.execute(sql, args)
res = self.cursor.fetchone()
return res
# 添加 就是添加一次提交多次
def get_mode (self,sql,args):
self.cursor.execute(sql, args)
self.conn.commit()
# 添加并且带返回值
def get_create(self,sql,args):
self.cursor.execute(sql,args)
self.conn.commit()
return self.cursor.lastrowid
# python插入记录后取得主键id的方法(cursor.lastrowid和conn.insert_id())
# 批量加入 以元祖的形式传参数 就是添加一次提交一次
def mul_mode(self, sql, args):
# self.cursor.executemany("insert into user (id,name) values (%s,%s)",[(1,"aaa"),(2,"bbb"),(3,"ccc")]) 传参方式
self.cursor.executemany(sql, args)
self.conn.commit()
def get_close(self):
self.cursor.close()
self.conn.close()
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持python博客。