Tkinter connection using the mysql simple login function

Python picking up, data analysis, information on aspects such as crawling brought us a lot of convenience, but Python's role not only in this, we see too many Python programs are a dark console, in fact, there are many good-looking Python interface. Here, we bring you a simple login screen production, and connect to the MySQL database to verify the correctness of the account password to control user access.

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Pymysql tkinter first need to install two modules and libraries, cmd command may be used to install

pip install pymysql
pip install tkinter

Install mysql database, please refer to the following tutorial:

https://blog.csdn.net/weixin_43792401/article/details/101624265

Use mysql create database test, and user table user

Database table is created, you can use the python made tkinter the login screen, including the login authentication login, exit the program.

Which are pop-up dialog box when authentication password login authentication must succeed and password.

import tkinter as tk
import pymysql

def success_tip(username):
    root.destroy()
    root1 = tk.Tk()
    root1.title('通知信息')
    welcome = username+'，欢迎您！！！'
    tk.Label(root1,text=welcome,font=36).pack(padx=100,pady=100)
    root1.mainloop()

def fail_tip():
    root2 = tk.Tk()
    root2.title('错误提示')
    tk.Label(root2,text='登录失败！密码错误或者账号不存在！',font=18,fg='red').pack(padx=20,pady=20)
    root2.mainloop()

def auto_login():
    #连接数据库
    db = pymysql.connect(host='localhost',user='数据库用户名',password='数据库密码',db='test',port=3306)
    #获取操作游标
    cur = db.cursor()
    #查询数据库
    sql = 'select * from user'
    entry1 = input1.get()
    entry2 = input2.get()
    flag = True
    try:
        cur.execute(sql)    #执行查询
        results = cur.fetchall()    #获取所有查询数据
        for row in results:
            uid = row[4]    #账号
            pwd = row[5]    #密码
            #判断输入的账号和密码是否正确
            if entry1 == uid and entry2 == pwd:
                print('登录成功')
                username = row[0]
                success_tip(username)
                flag = True
                break
            else:
                flag = False
        if flag == False:
            fail_tip()
    except Exception as e:
        print('登录异常')

def exit_login():
    root.destroy()
    pass

def frame():
    global root
    root = tk.Tk()
    root.title('登录窗口')
    v1 = tk.StringVar()
    v2 = tk.StringVar()
    #账号标签，位置在第0行第0列
    tk.Label(root,text='账号:').grid(row=0,column=0)
    #密码标签，位置在第1行第0列
    tk.Label(root,text='密码:').grid(row=1,column=0)
    #账号输入框
    global input1
    input1 = tk.Entry(root,textvariable=v1)
    input1.grid(row=0,column=1,padx=10,pady=5)
    #密码输入框
    global input2
    input2 = tk.Entry(root,textvariable=v2,show='*')
    input2.grid(row=1,column=1,padx=10,pady=5)
    #登录按钮
    tk.Button(root,text='登录',width=10,command=auto_login).grid(row=3,column=0,sticky=tk.W,padx=10,pady=5)
    #退出按钮
    tk.Button(root,text='退出',width=10,command=exit_login).grid(row=3,column=1,sticky=tk.E,padx=10,pady=5)
    root.mainloop()

if __name__ == '__main__':
    frame()