save project

level3-lesson20-diy4.py

@@ -72,7 +72,12 @@ class Note():  # 便签、笔记
 # 读取用户信息
 with open("user.txt", "r", encoding="utf-8") as f:
     info = f.read()
-    users = json.loads(info)
+#++++++++++++++++++++++++++++++++++++++++++++++++++++
+    if info == "":
+        users = {} # 创建空字典
+    else:
+#++++++++++++++++++++++++++++++++++++++++++++++++++++
+        users = json.loads(info)
 
 def login_to_reg():    # 登录界面转注册界面
     app_login.root.destroy()