auto save

code.py

 import tkinter
+from tkinter import *
 from tkinter import messagebox
 import json
 
+alist = ["星期六下午打篮球", "星期天下午和小美一起看电影",
+         "12月18日给蒂法过生日", "12.24送妈妈圣诞礼物"]
+
+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')
+            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):
+        num = self.v.get()
+        alist.pop(num)
+        self.canvas.destroy()
+        app.show()
+
+    def get_info(self):
+        info = self.ent.get()
+        self.ent.delete("0", END)
+        if info != "":
+            alist.append(info)
+            self.canvas.create_text(40,self.y,text=info,font=("宋体",11),
+                         anchor=W, fill='#FF9900')
+            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
+
 with open("user.txt", "r", encoding="utf-8") as f:
     info = f.read()
     users = json.loads(info)
@@ -36,10 +96,14 @@ def register():     # 注册验证
         reg_to_login()
 
 def login():        # 登录验证
+    global app
     name, password = app_login.get_input()
     pwd = users.get(name)
     if pwd == password:
-        messagebox.showinfo("成功", "登录成功")
+        app_login.root.destroy()
+        app = Note()
+        app.show()
+        app.root.mainloop()
     else:
         messagebox.showwarning("错误", "用户名或密码错误!")
 
@@ -134,4 +198,4 @@ class My_register():        # 注册窗口
         return self.name, self.password1, self.password2
 
 app_login = My_login()
-app_login.show()
\ No newline at end of file
+app_login.show()