Home Backend Development Python Tutorial Python访问MySQL封装的常用类实例

Python访问MySQL封装的常用类实例

Jun 10, 2016 pm 03:19 PM
mysql python encapsulation access

本文实例讲述了Python访问MySQL封装的常用类。分享给大家供大家参考。具体如下:

python访问mysql比较简单,下面整理的就是一个很简单的Python访问MySQL数据库类。

自己平时也就用到两个mysql函数:查询和更新,下面是自己常用的函数的封装,大家拷贝过去直接可以使用。
文件名:DBUtil.py

复制代码 代码如下:
# -*- encoding:utf8 -*-
'''
@author: crazyant.net
@version: 2013-10-22
 
封装的mysql常用函数
'''
 
import MySQLdb
 
class DB():
    def __init__(self, DB_HOST, DB_PORT, DB_USER, DB_PWD, DB_NAME):
        self.DB_HOST = DB_HOST
        self.DB_PORT = DB_PORT
        self.DB_USER = DB_USER
        self.DB_PWD = DB_PWD
        self.DB_NAME = DB_NAME
         
        self.conn = self.getConnection()
 
    def getConnection(self):
        return MySQLdb.Connect(
                           host=self.DB_HOST, #设置MYSQL地址
                           port=self.DB_PORT, #设置端口号
                           user=self.DB_USER, #设置用户名
                           passwd=self.DB_PWD, #设置密码
                           db=self.DB_NAME, #数据库名
                           charset='utf8' #设置编码
                           )
 
    def query(self, sqlString):
        cursor=self.conn.cursor()
        cursor.execute(sqlString)
        returnData=cursor.fetchall()
        cursor.close()
        self.conn.close()
        return returnData
     
    def update(self, sqlString):
        cursor=self.conn.cursor()
        cursor.execute(sqlString)
        self.conn.commit()
        cursor.close()
        self.conn.close()
 
if __name__=="__main__":
    db=DB('127.0.0.1',3306,'root','','wordpress')
    print db.query("show tables;")

使用方法为文件下面的main函数,使用query执行select语句并获取结果;或者使用update进行insert、delete等操作。

希望本文所述对大家的Python程序设计有所帮助。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1269
29
C# Tutorial
1248
24
MySQL and phpMyAdmin: Core Features and Functions MySQL and phpMyAdmin: Core Features and Functions Apr 22, 2025 am 12:12 AM

MySQL and phpMyAdmin are powerful database management tools. 1) MySQL is used to create databases and tables, and to execute DML and SQL queries. 2) phpMyAdmin provides an intuitive interface for database management, table structure management, data operations and user permission management.

Explain the purpose of foreign keys in MySQL. Explain the purpose of foreign keys in MySQL. Apr 25, 2025 am 12:17 AM

In MySQL, the function of foreign keys is to establish the relationship between tables and ensure the consistency and integrity of the data. Foreign keys maintain the effectiveness of data through reference integrity checks and cascading operations. Pay attention to performance optimization and avoid common errors when using them.

Python vs. JavaScript: Development Environments and Tools Python vs. JavaScript: Development Environments and Tools Apr 26, 2025 am 12:09 AM

Both Python and JavaScript's choices in development environments are important. 1) Python's development environment includes PyCharm, JupyterNotebook and Anaconda, which are suitable for data science and rapid prototyping. 2) The development environment of JavaScript includes Node.js, VSCode and Webpack, which are suitable for front-end and back-end development. Choosing the right tools according to project needs can improve development efficiency and project success rate.

Golang vs. Python: The Pros and Cons Golang vs. Python: The Pros and Cons Apr 21, 2025 am 12:17 AM

Golangisidealforbuildingscalablesystemsduetoitsefficiencyandconcurrency,whilePythonexcelsinquickscriptinganddataanalysisduetoitssimplicityandvastecosystem.Golang'sdesignencouragesclean,readablecodeanditsgoroutinesenableefficientconcurrentoperations,t

Python vs. C  : Understanding the Key Differences Python vs. C : Understanding the Key Differences Apr 21, 2025 am 12:18 AM

Python and C each have their own advantages, and the choice should be based on project requirements. 1) Python is suitable for rapid development and data processing due to its concise syntax and dynamic typing. 2)C is suitable for high performance and system programming due to its static typing and manual memory management.

Laravel vs. Python (with Frameworks): A Comparative Analysis Laravel vs. Python (with Frameworks): A Comparative Analysis Apr 21, 2025 am 12:15 AM

Laravel is suitable for projects that teams are familiar with PHP and require rich features, while Python frameworks depend on project requirements. 1.Laravel provides elegant syntax and rich features, suitable for projects that require rapid development and flexibility. 2. Django is suitable for complex applications because of its "battery inclusion" concept. 3.Flask is suitable for fast prototypes and small projects, providing great flexibility.

Compare and contrast MySQL and MariaDB. Compare and contrast MySQL and MariaDB. Apr 26, 2025 am 12:08 AM

The main difference between MySQL and MariaDB is performance, functionality and license: 1. MySQL is developed by Oracle, and MariaDB is its fork. 2. MariaDB may perform better in high load environments. 3.MariaDB provides more storage engines and functions. 4.MySQL adopts a dual license, and MariaDB is completely open source. The existing infrastructure, performance requirements, functional requirements and license costs should be taken into account when choosing.

Python vs. C  : Which Language to Choose for Your Project? Python vs. C : Which Language to Choose for Your Project? Apr 21, 2025 am 12:17 AM

Choosing Python or C depends on project requirements: 1) If you need rapid development, data processing and prototype design, choose Python; 2) If you need high performance, low latency and close hardware control, choose C.

See all articles