[大数据]Mysql 学生管理系统

import pymysql
import threading
import time

class StudentManage():
    #连接数据库并建立一个表
    def Bulid(self):
        conn = pymysql.connect(host='localhost', user='root', password='qq123123', database='test')
        print("连接成功")
        corsor = conn.cursor()
        corsor.execute('DROP TABLE IF EXISTS Student')
        sqlQuery = "CREATE TABLE Student(Name CHAR(20) NOT NULL ,Gender CHAR(20) NOT NULL ,NUM CHAR(15) NOT NULL)"
        corsor.execute(sqlQuery)
    #相关功能
    def Manage(self):
        conn = pymysql.connect(host='localhost', user='root', password='qq123123', database='test')
        corsor = conn.cursor()
        num = 1
        while(num != 5):
            num = input("输入你要进行的功能：")
            print(num)
            num = int(num)
            #增加
            if num == 1:
                name = input('请输入学生姓名：')
                gender = input('请输入学生的性别:')
                number = input('请输入学生的学号：')
                corsor = conn.cursor()
                sqlQuery = " INSERT INTO Student(Name,Gender,NUM) VALUE (%s,%s,%s)"
                value = (name, gender, number)
                corsor.execute(sqlQuery, value)
                conn.commit()
                print("完成")
            #修改
            elif num == 2:
                stu = input('请输入你要修改的学生姓名：')
                sqlQuery1 = 'select * from Student where Name = %s'
                args = (stu,)
                corsor.execute(sqlQuery1, args)
                results = corsor.fetchall()
                results = list(results)
                if len(results) != 0:
                    m_info = input('请输入你要修改的信息：')
                    d_info = input('请输入你要将它修改的内容：')
                    if m_info == 'Gender':
                        sqlQuery = 'UPDATE Student SET Gender=%s WHERE Name = %s'
                        args = (d_info, stu)
                        corsor.execute(sqlQuery, args)
                        conn.commit()
                        print("完成")
                    elif m_info == 'Name':
                        sqlQuery = 'UPDATE Student SET Name=%s WHERE Name = %s'
                        args = (d_info, stu)
                        corsor.execute(sqlQuery, args)
                        conn.commit()
                        print("完成")
                    elif m_info == 'NUM':
                        sqlQuery = 'UPDATE Student SET NUM=%s WHERE Name = %s'
                        args = (d_info, stu)
                        corsor.execute(sqlQuery, args)
                        conn.commit()
                        print("完成")
                else:
                    print("该生不存在")
            #删除
            elif num == 3:
                del_stu = input("请输入你要删除的学生姓名：")
                sqlQuery1 = 'select * from Student where Name = %s'
                args = (del_stu,)
                corsor.execute(sqlQuery1, args)
                results = corsor.fetchall()
                results = list(results)
                if len(results) != 0:
                    sqlQuery = 'delete from Student where Name=%s'
                    args = (del_stu,)
                    corsor.execute(sqlQuery, args)
                    conn.commit()
                    print("完成")
                else:
                    print("该生不存在")
            #查询
            elif num == 4:
                cha_stu = input("请输入你要查询的学生信息：")
                sqlQuery = 'select * from Student where Name = %s'
                args = (cha_stu,)
                corsor.execute(sqlQuery, args)
                results = corsor.fetchall()
                results1 = list(results)
                if len(results1) != 0:
                    print(results)
                else:
                    print("该生不存在")
                conn.commit()
        print("感谢使用")
#主界面的实现
def show():
    print("----------------欢迎使用学生管理系统------------------")
    print("请选择如下功能：")
    print("1:添加学生的信息")
    print("2:修改学生的信息")
    print("3:删除学生的信息")
    print("4:查询学生的信息")
    print("5:退出学生系统")

if __name__ == '__main__':
    show()
    student = StudentManage()
    student.Manage()