save project

diy2.py

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+print("欢迎")
+i=3
+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 and password== userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("用户名和密码错误!请重新输入")
+        elif password!= userpassword:
+            print("用户名和密码错误!请重新输入")
+        print("还有"+str(i)+"次机回")
+    else:
+        print("用户被锁定")
+        exit()
+print("欢迎来到贝尔编程!")
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