save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-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 name != username
+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 name != username
     print("用户名错误!请重新输入")
     print("用户名错误!请重新输入")
-    if password != userpassword
+    continue
+if password != userpassword
     print("密码错误!请重新输入")
     print("密码错误!请重新输入")
-    print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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