save project

my_app.py

 import tkinter
+from tkinter import messagebox
+import json
 
+with open('user.txt','r',encoding='utf_8') as file:
+    users=file.read()
+    users1=json.loads(users)
+    
 def login_to_reg():    # 登录界面转注册界面
     app_login.root.destroy()
     global app_reg
@@ -13,7 +19,22 @@ def reg_to_login():   # 注册界面转登录界面
     app_login.show()
 
 def register():     # 注册验证
-    pass
+    name,password1,password2=app_reg.get_input()
+    if name=='' or password1=='' or password2=='':
+        messagebox.showwarning("错误","请将信息填写完整！")
+    elif name in users:
+        messagebox.showwarning("警告","用户名已存在！")
+    elif password1!=password2:
+        messagebox.showwarning("警告","两次密码不一致！")
+    
+    else:
+       
+        users1[name]=password1
+        users2=json.dumps(users1,ensure_ascii=False)
+        with open('user.txt','w',encoding='utf_8') as file1:
+            file1.write(users2)
+        messagebox.showinfo("提示","注册成功！")
+        reg_to_login()
 
 def login():    # 登录验证
     pass    

user.txt

-{"admin": "123456"}
\ No newline at end of file
+{"admin": "123456", "pig": "qwer", "1111": "1111", "9999": "0000", "apig": "pig", "thelastuser": "last", "reallast": "last"}
\ No newline at end of file