save project

diy2.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    i>0
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            break
+            print("登录成功!")
+        if name != username:
+            print("用户名不存在")
+        continue
+        if password != userpassword:
+            print("密码错误")
+            print ("温馨提示：您还有"+str(i)+"次登录机会")
+    else：
+        print("账户已锁定")
+        exit
+print("欢迎来到贝尔编程!")
\ No newline at end of file