摘要：安裝和的安裝圖解破解可以看下這個文章鏈接的增刪改查通過提供的模塊實現(xiàn)對數(shù)據(jù)庫的操作，這個地方注意使用的是，的話使用模塊安裝模塊創(chuàng)建連接創(chuàng)建游標修改執(zhí)行，并返回受影響行數(shù)添加執(zhí)行，并返回受影響行數(shù)查詢刪除執(zhí)行，并

mysql的安裝圖解https://jingyan.baidu.com/art...
navicat for mysql破解可以看下這個文章https://www.cnblogs.com/da199...

通過Python提供的pymysql模塊實現(xiàn)對mysql數(shù)據(jù)庫的操作，這個地方注意python3.x使用的是pymysql，python2.x的話使用mysqldb模塊
安裝pymysql模塊：pip install PyMySQL

import pymysql
  
# 創(chuàng)建連接
conn = pymysql.connect(host="127.0.0.1", port=3306, user="root", passwd="123456", db="student")
# 創(chuàng)建游標
cursor = conn.cursor()

# 修改----執(zhí)行SQL，并返回受影響行數(shù)
# effect_row = cursor.execute("update user set name=%s,pwd=%s where id=%s", ("aaa","bb", 1))
  
# 添加----執(zhí)行SQL，并返回受影響行數(shù)
# cursor.execute("insert into user (name, pwd) values (%s,%s)", ("lidao","aaa"))
# 查詢----
cursor.execute("select * from user")
stus = cursor.fetchall()   
for stu in stus:
        print("id:%d; name: %s; pwd: %s; " %(stu[0], stu[1], stu[2]))

# 刪除---執(zhí)行SQL，并返回受影響行數(shù)
cursor.execute("delete from user where id=%s", (2))

# 提交，不然無法保存新建或者修改的數(shù)據(jù)
conn.commit()
#如果不加這個就手動添加autocommit=True 自動提交
#db=pymysql.connect(host="127.0.0.1",port=3306,user="root",passwd="123456",db="school",charset="utf8",autocommit=True)


  
# 關閉游標
cursor.close()
# 關閉連接
conn.close()

import pymysql  

class dbhelper():
    def __init__(self,host,port,user,passwd,db,charset="utf8"):
        self.host=host
        self.port=port
        self.user=user
        self.passwd=passwd
        self.db=db
        self.charset=charset
    #創(chuàng)建一個鏈接
    def connection(self):
        #1. 創(chuàng)建連接
        self.conn = pymysql.connect(host=self.host, port=self.port, user=self.user, passwd=self.passwd, db=self.db,charset=self.charset)
        #2. 創(chuàng)建游標
        self.cur = self.conn.cursor()
    #關閉鏈接
    def closeconnection(self):
        self.cur.close()
        self.conn.close()
    #查詢一條數(shù)據(jù)
    def getonedata(self,sql):
        try:
            self.connection()
            self.cur.execute(sql)
            result=self.cur.fetchone()
            self.closeconnection()
        except Exception:
            print(Exception)    
        return result
    #查詢多條數(shù)據(jù)    
    def getalldata(self,sql):
        try:
            self.connection()
            self.cur.execute(sql)
            result=self.cur.fetchall()
            self.closeconnection()
        except Exception:
            print(Exception)             
        return result
    #添加/修改/刪除 
    def executedata(self,sql):
        try:
            self.connection()
            self.cur.execute(sql)
            self.conn.commit()
            self.closeconnection()
        except Exception:
            print(Exception)       
              

封裝好了以后，后續(xù)用到mysql的操作的地方都可以直接使用，栗子如下：

from mysqlhelper import *

db=dbhelper(host="127.0.0.1", port=3306, user="root", passwd="123456", db="school",charset="utf8")
result=db.getalldata("select * from class")
print(result)