auto save

jauxjaisjd.py

+import tkinter
+root =tkinter.Tk()
+root.geometry('300x350+500+300')
+canv=tkinter.Canvas(root,width=240,height=300,bg="lightblue")
+canvas=tkinter.Canvas(canv,width=100,height=100,bg="green")
+canv.place(x=30,y=20)
+canvas.place(x=0,y=0)
+root.mainloop()
\ No newline at end of file

my_app.py

 import tkinter
-form tkinter import messagebox
+from tkinter import messagebox
 import json
 
 with open("user.txt","r",encoding="utf-8") as f:
@@ -26,7 +26,7 @@ def register():     # 注册验证
         messagebox.showwarning("错误","用户名已经存在！")
     elif password1 != password2:
         messagebox.showwarning("错误","两次密码不存在！")
-    elif:
+    else:
         users[name]=password1
         content=json.dump(user)
         with open("user.txt","w",encoding="utf-8")  as file: