auto save

my_app.py

 import tkinter
+from tkinter import *
+from tkinter import messagebox
+import json
+
+class Note():  # 便签、笔记
+    def __init__(self):
+        self.root = tkinter.Tk()
+        self.root.geometry('300x340+1000+200')
+        self.root.title("我的便签-待办事项")
+        self.root.resizable(width=False, height=False)  
+        self.bg_img = tkinter.PhotoImage(file="bg.png")
+        self.box = PhotoImage(file='box.png')
+
+    def show(self):  # 布置窗口界面
+        # 画布
+        self.canvas = tkinter.Canvas(self.root, width=300, height=340)
+        self.canvas.create_image(0, 0, image=self.bg_img, anchor=NW)
+        self.canvas.place(x=0, y=0)
+        # 输入框
+        self.ent = tkinter.Entry(self.root, show=None,font=('宋体', 13),
+                        bg="snow", width=25)
+        self.ent.place(x=10, y=310)
+        # 按钮
+        self.but = tkinter.Button(self.root,text='添加',font=('宋体', 12),
+                        bg="lightblue", width=5, command=self.get_info)
+        self.but.place(x=240, y=305)
+        # 展示所有的文字
+        self.y = 20
+        self.val = 0     # 单选框的value参数
+        self.v = IntVar()  # 设置关联变量 
+        for info in alist:
+            self.canvas.create_text(40, self.y, text=info,
+                        font=("宋体", 11), anchor=W, fill='#FF9900')
+            # 单选框组件
+            self.select = tkinter.Radiobutton(self.canvas,image=self.box,
+                        value=self.val,variable=self.v,width=25, height=15,
+                        borderwidth=0,command=self.remove)
+            self.select.place(x=-20,y=self.y-10)
+            self.val += 1
+            self.y += 30
+    
+    def remove(self):       # 清除选中的任务事件
+        num = self.v.get()
+        alist.pop(num)
+        # 更新用户待办事项
+        content = json.dumps(users)
+        with open("user.txt", "w", encoding="utf8") as file:  
+            file.write(content)
+        # 重新渲染便签界面
+        self.canvas.destroy()
+        app.show()
+
+    def get_info(self):         # 获取用户添加的新事件
+        info = self.ent.get()
+        self.ent.delete("0", END)
+        if info != "":
+            alist.append(info)
+            # 更新用户待办事项
+            content = json.dumps(users)
+            with open("user.txt", "w", encoding="utf8") as file:  
+                file.write(content)
+            self.canvas.create_text(40,self.y,text=info,font=("宋体",11),
+                         anchor=W, fill='#FF9900')
+            # 单选框组件
+            self.select = tkinter.Radiobutton(self.canvas,image=self.box,
+                        value=self.val,variable=self.v,width=25, height=15,
+                        borderwidth=0,command=self.remove)
+            self.select.place(x=-20,y=self.y-10)
+            self.val += 1
+            self.y += 30
+# 读取用户信息
+with open("user.txt", "r", encoding="utf-8") as f:
+    info = f.read()
+    users = json.loads(info)
 
 def login_to_reg():    # 登录界面转注册界面
-    pass
+    app_login.root.destroy()
+    global app_reg
+    app_reg = My_register()
+    app_reg.show()
 
 def reg_to_login():   # 注册界面转登录界面
-    pass
+    app_reg.root.destroy()
+    global app_login
+    app_login = My_login()
+    app_login.show()
 
 def register():     # 注册验证
-    pass
+    name,password1,password2 = app_reg.get_input()
+    if name =="" or password2 == "" or password1=="":
+        messagebox.showwarning("警告", "请填写完整的注册资料")
+    elif name in users:
+        messagebox.showwarning("错误", "用户名已经存在!")
+    elif password1 != password2:
+        messagebox.showwarning("错误", "两次密码不一致!")
+    else:           # 通过验证
+        user_info = {}
+        user_info["password"] = password1
+        user_info["event"] = ["提示1：可以从输入框添加新任务", 
+                              "提示2：点击前面选择框，表示任务完成"]
+        users[name] = user_info
+        content = json.dumps(users)
+        with open("user.txt", "w", encoding="utf-8") as file:    # "w"每次写入都覆盖原来的内容
+            file.write(content)
+        # 注册成功，跳往登陆界面
+        messagebox.showinfo("成功", "注册成功")
+        reg_to_login()
 
-def login():    # 登录验证
-    pass    
+def login():        # 登录验证
+    global app,alist
+    name, password = app_login.get_input()
+    # 验证用户名、密码是否正确
+    user_name = users.get(name)
+    if user_name != None and user_name["password"] == password:
+        alist = users[name]["event"]
+        app_login.root.destroy()
+        app = Note()
+        app.show()
+        app.root.mainloop()
+    else:
+        messagebox.showwarning("错误", "用户名或密码错误!")
 
 class My_login():       # 登录窗口
     def __init__(self):
@@ -43,11 +152,10 @@ class My_login():       # 登录窗口
         button1 = tkinter.Button(self.root, text='登录', bg="lightblue",
                   fg="black", width=15, command=login)
         button1.place(x=60, y=220)
-        button1 = tkinter.Button(self.root, text='注册', bg="lightgreen",
+        button2 = tkinter.Button(self.root, text='注册', bg="lightgreen",
                   fg="black", width=15, command=login_to_reg)
-        button1.place(x=230, y=220)
-        # 进入消息循环，监听事件
-        self.root.mainloop()
+        button2.place(x=230, y=220)
+        self.root.mainloop()    # 进入消息循环，监听事件
 
     def get_input(self):      # 获取输入的用户名、密码
         self.name = self.e1.get()
@@ -91,9 +199,9 @@ class My_register():        # 注册窗口
         button1 = tkinter.Button(self.root, text='提交', bg="lightblue",
                   width=15,command=register)
         button1.place(x=230, y=250)
-        button1 = tkinter.Button(self.root, text='取消', bg="lightgreen",
+        button2 = tkinter.Button(self.root, text='取消', bg="lightgreen",
                   width=15, command=reg_to_login)
-        button1.place(x=80, y=250)
+        button2.place(x=80, y=250)
         # 进入消息循环
         self.root.mainloop()
 

user.txt

-{"admin": "123456"}
\ No newline at end of file
+{"admin": "123456", "aaa": {"password": "123456", "event": ["\u63d0\u793a1\uff1a\u53ef\u4ee5\u4ece\u8f93\u5165\u6846\u6dfb\u52a0\u65b0\u4efb\u52a1", "\u63d0\u793a2\uff1a\u70b9\u51fb\u524d\u9762\u9009\u62e9\u6846\uff0c\u8868\u793a\u4efb\u52a1\u5b8c\u6210"]}}
\ No newline at end of file