refactor

sergio.py

@@ -154,7 +154,7 @@ class CommandStatus(LookupEnum, enum.StrEnum):
 
 
 class Pira:
-    END_OF_MESSAGE = "".join([chr(13), chr(10), chr(13), chr(10)])
+    END_OF_MESSAGE = "\r\n\r\n"
 
     def __init__(self, backend: Backends):
         self.log = logging.getLogger("Pira")