Python + Tkinter简单实现注册登录（连接本地MySQL数据库） python

-- coding: utf-8 -- """
@date: 2022/01/09 17:40
@author: Anker
@python：v3.10
"""
import tkinter as tk
import tkinter.messagebox
import pymysql
定义要执行的创建表的SQL语句 test_sql = """

CREATE TABLE IF NOT EXISTS user( id INT auto_increment PRIMARY KEY, name varchar(20) not null, password varchar(20) not null )ENGINE=innodb DEFAULT CHARSET=utf8; """

登录窗口 window = tk.Tk()
window.title('学生考试系统')
window.geometry('800x500')
登录背景图片 canvas = tk.Canvas(window, height=1920, width=1080)
login_background = tk.PhotoImage(file='./view.png')
login_image = canvas.create_image(0, 0, anchor='nw', image=login_background)
canvas.pack(side='top')
用户名密码标签 tk.Label(window, text='用户名:', bg='yellow').place(x=300, y=200)
tk.Label(window, text='密码:', bg='yellow').place(x=300, y=250)
用户名输入框 var_user_name = tk.StringVar()
entry_user_name = tk.Entry(window, textvariable=var_user_name)
entry_user_name.place(x=370, y=200)
密码输入框 var_user_pwd = tk.StringVar()
entry_user_pwd = tk.Entry(window, textvariable=var_user_pwd, show='*')
entry_user_pwd.place(x=370, y=250)
登录函数 def user_login():

# 输入框获取用户名密码 user_name = var_user_name.get() user_password = var_user_pwd.get() # 连接test_sql数据库 conn = pymysql.connect(host="localhost", user="root", password="123456", database="test_sql", charset="utf8") curs = conn.cursor() # 执行SQL语句，创建user数据表 curs.execute(test_sql) # 执行SQL语句，从user数据表中查询name和password字段值 curs.execute("SELECT name,password FROM user") # 将数据库查询的结果保存在result中 result = curs.fetchall() # fetchone()函数它的返回值是单个的元组, 也就是一行记录, 如果没有结果, 那就会返回null # fetchall()函数它的返回值是多个元组, 即返回多个行记录, 如果没有结果, 返回的是() # assert result, "数据库无该用户信息"# 添加断言，判断数据库有无该用户信息，没有就直接断言错误 # 登录账号操作 name_list = [it[0] for it in result]# 从数据库查询的result中遍历查询元组中第一个元素name # 判断用户名或密码不能为空 if not(user_name and user_password): tk.messagebox.showwarning(title='警告', message='用户名或密码不能为空') # 判断用户名和密码是否匹配 elif user_name in name_list: if user_password == result[name_list.index(user_name)][1]: tk.messagebox.showinfo(title='欢迎您', message='登录成功！\r\n当前登录账号为：' + user_name) selection() else: tk.messagebox.showerror(title='错误', message='密码输入错误') # 账号不在数据库中，则弹出是否注册的框 else: is_signup = tk.messagebox.askyesno(title='提示', message='该账号不存在，是否现在注册？') if is_signup: user_register()

注册函数 def user_register():

# 确认注册函数 def register_confirm(): # 获取输入框内的内容 name = new_name.get() password = new_password.get() password_confirm = new_password_confirm.get() # 先在本地手动创建一个test_sql数据库，然后连接该数据库 conn = pymysql.connect(host="localhost", user="root", password="123456", database="test_sql", charset="utf8") curs = conn.cursor() # 注册账号操作 try: # 执行SQL语句，创建user数据表 curs.execute(test_sql) # 向user数据表中插入语句 insert_sql = "INSERT INTO user(name, password) VALUES ('%s', '%s')" % (name, password) # 读取user数据表中的name和password字段值 read_sql = f'''select * from user where name = "{name}" and password = "{password}" ''' user_data = https://www.it610.com/article/curs.execute(read_sql) # 判断注册账号和密码 if not (name and password): tk.messagebox.showwarning(title='警告', message='注册账号或密码不能为空') elif password != password_confirm: tk.messagebox.showwarning(title='警告', message='两次密码输入不一致，请重新输入') else: if user_data.real: tk.messagebox.showwarning(title='警告', message='该注册账号已存在') else: curs.execute(insert_sql) tk.messagebox.showinfo(title='恭喜您', message='注册成功！\r\n注册账号为：' + name) print("数据插入成功") # 提交到数据库执行 conn.commit() curs.close() except IOError: print("数据插入失败") conn.rollback() # 关闭数据库连接 conn.close() window_sign_up.destroy() # 注册窗口 window_sign_up = tk.Toplevel(window) window_sign_up.geometry('350x200') window_sign_up.title('欢迎注册') # 注册账号及标签、输入框 new_name = tk.StringVar() tk.Label(window_sign_up, bg='green', text='注册账号：').place(x=50, y=10) tk.Entry(window_sign_up, textvariable=new_name).place(x=150, y=10) # 注册密码及标签、输入框 new_password = tk.StringVar() tk.Label(window_sign_up, bg='green', text='密码：').place(x=50, y=50) tk.Entry(window_sign_up, textvariable=new_password, show='*').place(x=150, y=50) # 重复密码及标签、输入框 new_password_confirm = tk.StringVar() tk.Label(window_sign_up, bg='green', text='确认密码：').place(x=50, y=90) tk.Entry(window_sign_up, textvariable=new_password_confirm, show='*').place(x=150, y=90) # 确认注册按钮及位置 bt_confirm_sign_up = tk.Button(window_sign_up, bg='green', text='确认注册', command=register_confirm) bt_confirm_sign_up.place(x=150, y=130)

选择题函数 def selection():

def wrong(): tk.messagebox.showerror(title='错误', message='抱歉，您答错了') def right(): tk.messagebox.showinfo(title='提示', message='恭喜您，答对了') # 选择题窗口 window_options = tk.Toplevel(window) window_options.geometry('350x200') window_options.title('选择题') # 在图形界面上创建一个标签label用以显示并放置 var = tk.StringVar()# 定义一个var用来将radiobutton的值和Label的值联系在一起. lab = tk.Label(window_options, bg='red', fg='white', width=50) lab.pack() lab.config(text='第1题：两个锐角均为60度的三角形是什么三角形（）' + var.get()) # 创建3个radiobutton选项，[黄金](https://www.gendan5.com/nmetal/gold.html)其中variable=var, value='https://www.it610.com/article/A'表示：当鼠标选中其中一个选项，把value的值A放到变量var中，然后赋值给variable radio1 = tk.Radiobutton(window_options, text='A：锐角三角形', variable=var, value='https://www.it610.com/article/A', command=wrong) radio1.pack() radio2 = tk.Radiobutton(window_options, text='B：钝角三角形', variable=var, value='https://www.it610.com/article/B', command=wrong) radio2.pack() radio3 = tk.Radiobutton(window_options, text='C：等边三角形', variable=var, value='https://www.it610.com/article/C', command=right) radio3.pack() radio4 = tk.Radiobutton(window_options, text='D：直角三角形', variable=var, value='https://www.it610.com/article/D', command=wrong) radio4.pack()

注册和登录按钮 bt_register = tk.Button(window, bg='yellow', text='注册', command=user_register)
bt_register.place(x=380, y=300)
bt_login = tk.Button(window, bg='yellow', text='登录', command=user_login)
bt_login.place(x=440, y=300)
主循环 【Python + Tkinter简单实现注册登录（连接本地MySQL数据库）】window.mainloop()