save project

diy.py

+i=3
 username="yinuo"
 usepassword="123456"
 while True:
-    name=input("请输入用户名")
-    password=input("请输入密码")
-    if name==username and password==usepassword:
-        print("登录成功")    
-        break
-    if name!=username:
-        print("用户名错误")
-    if password!=username:
-        print("密码错误")
+    if i>0:
+        name=input("请输入用户名")
+        password=input("请输入密码")
+        i-=1
+        if name==username and password==usepassword:
+            print("登录成功")    
+            break
+        if name!=username:
+            print("用户名错误")
+        if password!=username:
+            print("密码错误")
+    else:
+       print("已锁定")
 print("欢迎")
 
 
@@ -35,3 +40,4 @@ print("欢迎")
 
 
 
+