save project

diy2.py

+i=3        
 username = "python"
 userpassword = "123456"
 while True:
+    if i>0:
     name = input("请输入用户名:")
     password = input("请输入密码:")
     if name == username and password == userpassword:
+        i=i-1
         print("登录成功!")
         break
-    if username !=name:
+    elif username !=name:
         print("密码错误!请重新输入")
-        continue
-    if userpassword !=password:        
-        print("密码错误!请重新输入")
-        continue
+    
+    else:        
+        print("登录次数已用完")
+    else()
 print("欢迎来到贝尔编程!")
\ No newline at end of file