save project

diy2.py

 username = "python"
 userpassword = "123456"
+i=3
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
-    if username != name:
-        print("输入用户名错误")
-        continue 
-    if password != userpassword:
-        print("输入密码错误")       
+    if i > 0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i = i - 1 
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if username != name:
+            print("输入用户名错误")
+            continue 
+        if password != userpassword:
+            print("输入密码错误")
+    else:
+        print("您的账号被锁定")
+        exit()              
 print("欢迎来到贝尔编程!")
\ No newline at end of file