save project

diy2.py

+username = "python"
+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:
+        print("用户名错误！请重新输入")
+        continue
+    if name !=userpassword:
+    print('密码错误！请重新输入')
+print('欢迎来到贝e'ueu')
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