auto save

diy2.py

+t= "python"
+y= "123456"
+while True:
+    u = input("请输入用户名:")
+    k = input("请输入密码:")
+    if u == t and k==y:
+        print("登录成功!")
+        break
+    if u != t：
+        print("贝尔编程!")
+    
+
+    
+
+print("欢迎来到贝尔编程!")
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