save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
+    i == 3
     name = input("请输入用户名:")
     name = input("请输入用户名:")
     password = input("请输入密码:")
     password = input("请输入密码:")
     if name == username and password == userpassword:        
     if name == username and password == userpassword:        
@@ -8,8 +9,10 @@ while True:
         break
         break
     elif name != username:
     elif name != username:
         print('用户名错误，请重新输入')       
         print('用户名错误，请重新输入')       
+        i = i-1
     else:
     else:
         print('密码错误，请重新输入')     
         print('密码错误，请重新输入')     
+    if i == 0:
+        exit
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
 
 
-