auto save

diy2.py

+username = "cy"
+userpassword = "nmsl"
+while True:
+    name = input("给老子输用户名:")
+    password = input("给老子输密码:")
+    if name == username and password == userpassword:
+        print("你给老子输入成功了!")
+        break
+        else name != username:
+            print("nmsl!用户错了!")
+        else password != userpassword:
+            print("nmsl!密码错了!")
+print("welcome nmsl !")
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