apply formatting with current black/isort versions

fmt.sh

@@ -3,5 +3,11 @@
 self=$(dirname "$(readlink -f "$0")")
 cd "${self}"
 
-python3 -m black src
+if [ -d venv ]; then
-python3 -m isort src
+    python=venv/bin/python3
+else
+    python=python3
+fi
+
+"${python}" -m black src
+"${python}" -m isort src

src/capport/database.py

@@ -142,9 +142,9 @@ class Database:
         self._macs: dict[cptypes.MacAddress, MacEntry] = {}
         self._state_filename = state_filename
         self._changed_since_last_cleanup = False
-        self._send_changes: trio.MemorySendChannel[
+        self._send_changes: (
-            capport.comm.message.MacStates | list[capport.comm.message.MacStates],
+            trio.MemorySendChannel[capport.comm.message.MacStates | list[capport.comm.message.MacStates],] | None
-        ] | None = None
+        ) = None
 
     @contextlib.asynccontextmanager
     async def make_changes(self) -> typing.AsyncGenerator[PendingUpdates, None]:

src/capport/stats.py

@@ -17,7 +17,7 @@ from . import cptypes
 class MetricPrinter:
     args: CliArguments
     now: int | None = None
-    _known_names: set[str] = dataclasses.field(default_factory=set, init=None)
+    _known_names: set[str] = dataclasses.field(default_factory=set, init=False)
     _now_str: str = dataclasses.field(init=False)
     _label_str: str = dataclasses.field(init=False)
 
@@ -28,8 +28,8 @@ class MetricPrinter:
             self._now_str = ""
         labels = []
         if self.args.instance:
-            labels.append(f"captive_instance=\"{self.args.instance}\"")
+            labels.append(f'captive_instance="{self.args.instance}"')
-        labels.append(f"interface=\"{self.args.interface}\"")
+        labels.append(f'interface="{self.args.interface}"')
         self._label_str = "{" + ",".join(labels) + "}"
 
     def print_metric(self, *, name: str, mtype: str, value: typing.Any, help: str | None = None):
@@ -56,7 +56,7 @@ async def amain(args: CliArguments):
     unique_ipv6 = set()
     async with capport.utils.ipneigh.connect() as ipn:
         ipn.ip.strict_check = True
-        async for (mac, addr) in ipn.dump_neighbors(args.interface):
+        async for mac, addr in ipn.dump_neighbors(args.interface):
             if mac in captive_allowed_entries:
                 seen_allowed_entries.add(mac)
             unique_clients.add(mac)
@@ -101,13 +101,13 @@ async def amain(args: CliArguments):
         total_ipv6,
         help="Number of IPv6 addresses seen in neighbor cache",
     )
-    with open('/proc/sys/net/netfilter/nf_conntrack_count') as f:
+    with open("/proc/sys/net/netfilter/nf_conntrack_count") as f:
         printer.print_gauge(
             "nf_conntrack_count",
             int(f.readline()),
             help="Conntrack count",
         )
-    with open('/proc/sys/net/netfilter/nf_conntrack_max') as f:
+    with open("/proc/sys/net/netfilter/nf_conntrack_max") as f:
         printer.print_gauge(
             "nf_conntrack_max",
             int(f.readline()),

src/capport/utils/nft_socket.py

@@ -67,9 +67,11 @@ def _build(msg_class: type[_NlMsgBase], /, attrs: dict = {}, header: dict = {},
                 # support passing nested attributes as dicts of subattributes (or lists of those)
                 if prime["nla_array"]:
                     value = [
+                        (
                             _build(nla_class, attrs=elem)
                             if not isinstance(elem, pyroute2.netlink.nlmsg_base) and isinstance(elem, dict)
                             else elem
+                        )
                         for elem in value
                     ]
                 elif not isinstance(value, pyroute2.netlink.nlmsg_base) and isinstance(value, dict):