Handle netuid not set

Author: thewhaleking

cli.py

@@ -3159,7 +3159,11 @@ def subnets_register(
 
     def subnets_metagraph(
         self,
-        netuid: int = Options.netuid,
+        netuid: Optional[int] = typer.Option(
+            None,
+            help="The netuid (network unique identifier) of the subnet within the root network, (e.g. 1). This does"
+            "is ignored when used with `--reuse-last`.",
+        ),
         network: str = Options.network,
         chain: str = Options.chain,
         reuse_last: bool = typer.Option(
@@ -3234,8 +3238,15 @@ def subnets_metagraph(
         not as a standalone function within user code.
         """
         if reuse_last:
+            if netuid is not None:
+                console.print("Cannot specify netuid when using `--reuse-last`")
+                raise typer.Exit()
             subtensor = None
         else:
+            if netuid is None:
+                netuid = rich.prompt.IntPrompt.ask(
+                    "Enter the netuid (network unique identifier) of the subnet within the root network, (e.g. 1)."
+                )
             subtensor = self.initialize_chain(network, chain)
         return self._run_command(
             subnets.metagraph_cmd(subtensor, netuid, reuse_last, html_output)

src/commands/subnets.py

@@ -329,7 +329,10 @@ async def register(wallet: Wallet, subtensor: "SubtensorInterface", netuid: int)
 
 
 async def metagraph_cmd(
-    subtensor: "SubtensorInterface", netuid: int, reuse_last: bool, html_output: bool
+    subtensor: "SubtensorInterface",
+    netuid: Optional[int],
+    reuse_last: bool,
+    html_output: bool,
 ):
     """Prints an entire metagraph."""
     # TODO allow config to set certain columns