save project

diy2.py

+i = 3
 username = "python"
 userpassword = "123456"
-
 while True:
-    nume=input("请输入用户名")
-    password=input("请输入密码")
-    if nume == username and password == userpassword:
-        print("登录成功")
-        break
-    if nume != username:
-        input("用户名错误")
-    if password != userpassword:
-        input("密码错误")
+    if i>0:
+        nume=input("请输入用户名")
+        password=input("请输入密码")
+        i-=1
+        if nume == username and password == userpassword:
+            print("登录成功")
+            break
+        if nume != username:
+            input("用户名错误")
+        if password != userpassword:
+            input("密码错误")
+    else:
+        print("你的账号密码已被锁定")
+        exit()
 print("欢迎来到贝尔编程！")
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