本文实例为大家分享了如何利用Python对数据库的增删改查进行简单的封装，供大家参考，具体内容如下

1.insert

import mysql.connector import os import codecs #设置数据库用户名和密码 user='root';#用户名 pwd='root';#密码 host='localhost';#ip地址 db='mysql';#所要操作数据库名字 charset='UTF-8' cnx = mysql.connector.connect(user=user,password=pwd, host=host, database=db) #设置游标 cursor = cnx.cursor(dictionary=True) #插入数据 #print(insert('gelixi_help_type',{'type_name':''sddfdsfs'','type_sort':'283'})) def insert(table_name,insert_dict): param=''; value=''; if(isinstance(insert_dict,dict)): for key in insert_dict.keys(): param=param+key+"," value=value+insert_dict[key]+',' param=param[:-1] value=value[:-1] sql="insert into %s (%s) values(%s)"%(table_name,param,value) cursor.execute(sql) id=cursor.lastrowid cnx.commit() return id

2.delete

def delete(table_name,where=''): if(where!=''): str='where' for key_value in where.keys(): value=where[key_value] str=str+' '+key_value+'='+value+' '+'and' where=str[:-3] sql="delete from %s %s"%(table_name,where) cursor.execute(sql) cnx.commit()

3.select

#取得数据库信息 # print(select({'table':'gelixi_help_type','where':{'help_show': '1'}},'type_name,type_id')) def select(param,fields='*'): table=param['table'] if('where' in param): thewhere=param['where'] if(isinstance (thewhere,dict)): keys=thewhere.keys() str='where'; for key_value in keys: value=thewhere[key_value] str=str+' '+key_value+'='+value+' '+'and' where=str[:-3] else: where='' sql="select %s from %s %s"%(fields,table,where) cursor.execute(sql) result=cursor.fetchall() return result

4.showtable,showcolumns

#显示建表语句 #table string 表名 #return string 建表语句 def showCreateTable(table): sql='show create table %s'%(table) cursor.execute(sql) result=cursor.fetchall()[0] return result['Create Table'] #print(showCreateTable('gelixi_admin')) #显示表结构语句 def showColumns(table): sql='show columns from %s '%(table) print(sql) cursor.execute(sql) result=cursor.fetchall() dict1={} for info in result: dict1[info['Field']]=info return dict1

以上就是Python Sql数据库增删改查操作的相关操作，希望对大家的学习有所帮助。