save project

diy.py

+i=0
+USERNAME = "PYTHON"
+USERPASSWORD ="123456"
+while True:
+    if i>0:
+        NAME  = input("请输入用户名：")
+        PASSWORD = input("请输入密码：")
+        i-=1
+        if NAME ==USERNAME:
+            if PASSWORD == USERPASSWORD:
+                print("登录成功!")
+                break
+            else:
+                print("密码错误!请重新输入")
+                print("你还有"+str(i)+"次机会")
+        else:
+            print("用户名错误!请重新输入")
+            print("你还有"+str(i)+"次机会")
+    else:
+        print("账户被锁定")
+        exit()
+print("欢迎来到贝尔编程")
+