save project

diy2.py

+username = "p1n"
+userpassword = "1"
+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
+    else:
+        if not username == "p1n":
+            print('你名字错了')
+        elif not userpassword == "1":
+            print('你密码错了')
+        else:
+            print('都错了')
+print("欢迎来到贝尔编程!")
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