fix #16

Author: rambo

src/scpi/scpi.py

@@ -174,7 +174,7 @@ async def command(self, command, cmd_timeout=COMMAND_DEFAULT_TIMEOUT, abort_on_t
         """Sends a command, does not wait for response"""
         try:
 
-            async def _command() -> None:
+            async def _command(command: str) -> None:
                 """Wrap the actual work"""
                 nonlocal self
                 async with self.lock: