run lint with pyupgrade at py39-plus

libp2p/crypto/authenticated_encryption.py

@@ -2,9 +2,6 @@ from dataclasses import (
     dataclass,
 )
 import hmac
-from typing import (
-    Tuple,
-)
 
 from Crypto.Cipher import (
     AES,
@@ -66,7 +63,7 @@ class MacAndCipher:
 
 def initialize_pair(
     cipher_type: str, hash_type: str, secret: bytes
-) -> Tuple[EncryptionParameters, EncryptionParameters]:
+) -> tuple[EncryptionParameters, EncryptionParameters]:
     """
     Return a pair of ``Keys`` for use in securing a communications channel
     with authenticated encryption derived from the ``secret`` and using the

libp2p/crypto/key_exchange.py

@@ -1,6 +1,5 @@
 from typing import (
     Callable,
-    Tuple,
     cast,
 )
 
@@ -22,7 +21,7 @@ SharedKeyGenerator = Callable[[bytes], bytes]
 int_bytelen = util.int_bytelen
 
 
-def create_ephemeral_key_pair(curve_type: str) -> Tuple[PublicKey, SharedKeyGenerator]:
+def create_ephemeral_key_pair(curve_type: str) -> tuple[PublicKey, SharedKeyGenerator]:
     """Facilitates ECDH key exchange."""
     if curve_type != "P-256":
         raise NotImplementedError()

libp2p/host/basic_host.py

@@ -1,12 +1,13 @@
+from collections.abc import (
+    AsyncIterator,
+    Sequence,
+)
 from contextlib import (
     asynccontextmanager,
 )
 import logging
 from typing import (
     TYPE_CHECKING,
-    AsyncIterator,
-    List,
-    Sequence,
 )
 
 import multiaddr
@@ -132,20 +133,20 @@ class BasicHost(IHost):
         """
         return self.multiselect
 
-    def get_addrs(self) -> List[multiaddr.Multiaddr]:
+    def get_addrs(self) -> list[multiaddr.Multiaddr]:
         """
         :return: all the multiaddr addresses this host is listening to
         """
         # TODO: We don't need "/p2p/{peer_id}" postfix actually.
         p2p_part = multiaddr.Multiaddr(f"/p2p/{self.get_id()!s}")
 
-        addrs: List[multiaddr.Multiaddr] = []
+        addrs: list[multiaddr.Multiaddr] = []
         for transport in self._network.listeners.values():
             for addr in transport.get_addrs():
                 addrs.append(addr.encapsulate(p2p_part))
         return addrs
 
-    def get_connected_peers(self) -> List[ID]:
+    def get_connected_peers(self) -> list[ID]:
         """
         :return: all the ids of peers this host is currently connected to
         """

libp2p/host/host_interface.py

@@ -2,11 +2,12 @@ from abc import (
     ABC,
     abstractmethod,
 )
+from collections.abc import (
+    Sequence,
+)
 from typing import (
     Any,
     AsyncContextManager,
-    List,
-    Sequence,
 )
 
 import multiaddr
@@ -66,13 +67,13 @@ class IHost(ABC):
         """
 
     @abstractmethod
-    def get_addrs(self) -> List[multiaddr.Multiaddr]:
+    def get_addrs(self) -> list[multiaddr.Multiaddr]:
         """
         :return: all the multiaddr addresses this host is listening to
         """
 
     @abstractmethod
-    def get_connected_peers(self) -> List[ID]:
+    def get_connected_peers(self) -> list[ID]:
         """
         :return: all the ids of peers this host is currently connected to
         """

libp2p/host/ping.py

@@ -1,9 +1,6 @@
 import logging
 import secrets
 import time
-from typing import (
-    List,
-)
 
 import trio
 
@@ -102,7 +99,7 @@ class PingService:
     def __init__(self, host: IHost):
         self._host = host
 
-    async def ping(self, peer_id: PeerID, ping_amt: int = 1) -> List[int]:
+    async def ping(self, peer_id: PeerID, ping_amt: int = 1) -> list[int]:
         stream = await self._host.new_stream(peer_id, [ID])
 
         try:

libp2p/network/connection/net_connection_interface.py

@@ -1,9 +1,6 @@
 from abc import (
     abstractmethod,
 )
-from typing import (
-    Tuple,
-)
 
 import trio
 
@@ -27,5 +24,5 @@ class INetConn(Closer):
         ...
 
     @abstractmethod
-    def get_streams(self) -> Tuple[INetStream, ...]:
+    def get_streams(self) -> tuple[INetStream, ...]:
         ...

libp2p/network/connection/swarm_connection.py

@@ -1,7 +1,5 @@
 from typing import (
     TYPE_CHECKING,
-    Set,
-    Tuple,
 )
 
 import trio
@@ -32,7 +30,7 @@ Reference: https://github.com/libp2p/go-libp2p-swarm/blob/04c86bbdafd390651cb2ee
 class SwarmConn(INetConn):
     muxed_conn: IMuxedConn
     swarm: "Swarm"
-    streams: Set[NetStream]
+    streams: set[NetStream]
     event_closed: trio.Event
 
     def __init__(self, muxed_conn: IMuxedConn, swarm: "Swarm") -> None:
@@ -104,7 +102,7 @@ class SwarmConn(INetConn):
         muxed_stream = await self.muxed_conn.open_stream()
         return await self._add_stream(muxed_stream)
 
-    def get_streams(self) -> Tuple[NetStream, ...]:
+    def get_streams(self) -> tuple[NetStream, ...]:
         return tuple(self.streams)
 
     def remove_stream(self, stream: NetStream) -> None:

libp2p/network/network_interface.py

@@ -2,10 +2,11 @@ from abc import (
     ABC,
     abstractmethod,
 )
+from collections.abc import (
+    Sequence,
+)
 from typing import (
     TYPE_CHECKING,
-    Dict,
-    Sequence,
 )
 
 from multiaddr import (
@@ -41,8 +42,8 @@ if TYPE_CHECKING:
 
 class INetwork(ABC):
     peerstore: IPeerStore
-    connections: Dict[ID, INetConn]
-    listeners: Dict[str, IListener]
+    connections: dict[ID, INetConn]
+    listeners: dict[str, IListener]
 
     @abstractmethod
     def get_peer_id(self) -> ID:

libp2p/network/swarm.py

@@ -1,7 +1,5 @@
 import logging
 from typing import (
-    Dict,
-    List,
     Optional,
 )
 
@@ -88,13 +86,13 @@ class Swarm(Service, INetworkService):
     transport: ITransport
     # TODO: Connection and `peer_id` are 1-1 mapping in our implementation,
     #   whereas in Go one `peer_id` may point to multiple connections.
-    connections: Dict[ID, INetConn]
-    listeners: Dict[str, IListener]
+    connections: dict[ID, INetConn]
+    listeners: dict[str, IListener]
     common_stream_handler: StreamHandlerFn
     listener_nursery: Optional[trio.Nursery]
     event_listener_nursery_created: trio.Event
 
-    notifees: List[INotifee]
+    notifees: list[INotifee]
 
     def __init__(
         self,
@@ -161,7 +159,7 @@ class Swarm(Service, INetworkService):
         if not addrs:
             raise SwarmException(f"No known addresses to peer {peer_id}")
 
-        exceptions: List[SwarmException] = []
+        exceptions: list[SwarmException] = []
 
         # Try all known addresses
         for multiaddr in addrs:

libp2p/peer/addrbook_interface.py

@@ -2,8 +2,7 @@ from abc import (
     ABC,
     abstractmethod,
 )
-from typing import (
-    List,
+from collections.abc import (
     Sequence,
 )
 
@@ -41,7 +40,7 @@ class IAddrBook(ABC):
         """  # noqa: E501
 
     @abstractmethod
-    def addrs(self, peer_id: ID) -> List[Multiaddr]:
+    def addrs(self, peer_id: ID) -> list[Multiaddr]:
         """
         :param peer_id: peer to get addresses of
         :return: all known (and valid) addresses for the given peer
@@ -56,7 +55,7 @@ class IAddrBook(ABC):
         """
 
     @abstractmethod
-    def peers_with_addrs(self) -> List[ID]:
+    def peers_with_addrs(self) -> list[ID]:
         """
         :return: all of the peer IDs stored with addresses
         """

libp2p/peer/peerdata.py

@@ -1,8 +1,8 @@
+from collections.abc import (
+    Sequence,
+)
 from typing import (
     Any,
-    Dict,
-    List,
-    Sequence,
 )
 
 from multiaddr import (
@@ -22,9 +22,9 @@ from .peerdata_interface import (
 class PeerData(IPeerData):
     pubkey: PublicKey
     privkey: PrivateKey
-    metadata: Dict[Any, Any]
-    protocols: List[str]
-    addrs: List[Multiaddr]
+    metadata: dict[Any, Any]
+    protocols: list[str]
+    addrs: list[Multiaddr]
 
     def __init__(self) -> None:
         self.pubkey = None
@@ -33,7 +33,7 @@ class PeerData(IPeerData):
         self.protocols = []
         self.addrs = []
 
-    def get_protocols(self) -> List[str]:
+    def get_protocols(self) -> list[str]:
         """
         :return: all protocols associated with given peer
         """
@@ -59,7 +59,7 @@ class PeerData(IPeerData):
             if addr not in self.addrs:
                 self.addrs.append(addr)
 
-    def get_addrs(self) -> List[Multiaddr]:
+    def get_addrs(self) -> list[Multiaddr]:
         """
         :return: all multiaddresses
         """

libp2p/peer/peerdata_interface.py

@@ -2,10 +2,11 @@ from abc import (
     ABC,
     abstractmethod,
 )
+from collections.abc import (
+    Sequence,
+)
 from typing import (
     Any,
-    List,
-    Sequence,
 )
 
 from multiaddr import (
@@ -24,7 +25,7 @@ from .peermetadata_interface import (
 
 class IPeerData(ABC):
     @abstractmethod
-    def get_protocols(self) -> List[str]:
+    def get_protocols(self) -> list[str]:
         """
         :return: all protocols associated with given peer
         """
@@ -48,7 +49,7 @@ class IPeerData(ABC):
         """
 
     @abstractmethod
-    def get_addrs(self) -> List[Multiaddr]:
+    def get_addrs(self) -> list[Multiaddr]:
         """
         :return: all multiaddresses
         """

libp2p/peer/peerinfo.py

@@ -1,7 +1,8 @@
+from collections.abc import (
+    Sequence,
+)
 from typing import (
     Any,
-    List,
-    Sequence,
 )
 
 import multiaddr
@@ -13,7 +14,7 @@ from .id import (
 
 class PeerInfo:
     peer_id: ID
-    addrs: List[multiaddr.Multiaddr]
+    addrs: list[multiaddr.Multiaddr]
 
     def __init__(self, peer_id: ID, addrs: Sequence[multiaddr.Multiaddr]) -> None:
         self.peer_id = peer_id

libp2p/peer/peerstore.py

@@ -1,11 +1,11 @@
 from collections import (
     defaultdict,
 )
+from collections.abc import (
+    Sequence,
+)
 from typing import (
     Any,
-    Dict,
-    List,
-    Sequence,
 )
 
 from multiaddr import (
@@ -34,7 +34,7 @@ from .peerstore_interface import (
 
 
 class PeerStore(IPeerStore):
-    peer_data_map: Dict[ID, PeerData]
+    peer_data_map: dict[ID, PeerData]
 
     def __init__(self) -> None:
         self.peer_data_map = defaultdict(PeerData)
@@ -49,7 +49,7 @@ class PeerStore(IPeerStore):
             return PeerInfo(peer_id, peer_data.get_addrs())
         raise PeerStoreError("peer ID not found")
 
-    def get_protocols(self, peer_id: ID) -> List[str]:
+    def get_protocols(self, peer_id: ID) -> list[str]:
         """
         :param peer_id: peer ID to get protocols for
         :return: protocols (as list of strings)
@@ -75,7 +75,7 @@ class PeerStore(IPeerStore):
         peer_data = self.peer_data_map[peer_id]
         peer_data.set_protocols(list(protocols))
 
-    def peer_ids(self) -> List[ID]:
+    def peer_ids(self) -> list[ID]:
         """
         :return: all of the peer IDs stored in peer store
         """
@@ -123,7 +123,7 @@ class PeerStore(IPeerStore):
         peer_data = self.peer_data_map[peer_id]
         peer_data.add_addrs(list(addrs))
 
-    def addrs(self, peer_id: ID) -> List[Multiaddr]:
+    def addrs(self, peer_id: ID) -> list[Multiaddr]:
         """
         :param peer_id: peer ID to get addrs for
         :return: list of addrs
@@ -141,12 +141,12 @@ class PeerStore(IPeerStore):
         if peer_id in self.peer_data_map:
             self.peer_data_map[peer_id].clear_addrs()
 
-    def peers_with_addrs(self) -> List[ID]:
+    def peers_with_addrs(self) -> list[ID]:
         """
         :return: all of the peer IDs which has addrs stored in peer store
         """
         # Add all peers with addrs at least 1 to output
-        output: List[ID] = []
+        output: list[ID] = []
 
         for peer_id in self.peer_data_map:
             if len(self.peer_data_map[peer_id].get_addrs()) >= 1:

libp2p/peer/peerstore_interface.py

@@ -1,10 +1,11 @@
 from abc import (
     abstractmethod,
 )
+from collections.abc import (
+    Sequence,
+)
 from typing import (
     Any,
-    List,
-    Sequence,
 )
 
 from multiaddr import (
@@ -40,7 +41,7 @@ class IPeerStore(IAddrBook, IPeerMetadata):
         """
 
     @abstractmethod
-    def get_protocols(self, peer_id: ID) -> List[str]:
+    def get_protocols(self, peer_id: ID) -> list[str]:
         """
         :param peer_id: peer ID to get protocols for
         :return: protocols (as list of strings)
@@ -62,7 +63,7 @@ class IPeerStore(IAddrBook, IPeerMetadata):
         """
 
     @abstractmethod
-    def peer_ids(self) -> List[ID]:
+    def peer_ids(self) -> list[ID]:
         """
         :return: all of the peer IDs stored in peer store
         """
@@ -101,7 +102,7 @@ class IPeerStore(IAddrBook, IPeerMetadata):
         """
 
     @abstractmethod
-    def addrs(self, peer_id: ID) -> List[Multiaddr]:
+    def addrs(self, peer_id: ID) -> list[Multiaddr]:
         """
         :param peer_id: peer ID to get addrs for
         :return: list of addrs
@@ -114,7 +115,7 @@ class IPeerStore(IAddrBook, IPeerMetadata):
         """
 
     @abstractmethod
-    def peers_with_addrs(self) -> List[ID]:
+    def peers_with_addrs(self) -> list[ID]:
         """
         :return: all of the peer IDs which has addrs stored in peer store
         """

libp2p/protocol_muxer/multiselect.py

@@ -1,8 +1,3 @@
-from typing import (
-    Dict,
-    Tuple,
-)
-
 from libp2p.typing import (
     StreamHandlerFn,
     TProtocol,
@@ -30,10 +25,10 @@ class Multiselect(IMultiselectMuxer):
     communication.
     """
 
-    handlers: Dict[TProtocol, StreamHandlerFn]
+    handlers: dict[TProtocol, StreamHandlerFn]
 
     def __init__(
-        self, default_handlers: Dict[TProtocol, StreamHandlerFn] = None
+        self, default_handlers: dict[TProtocol, StreamHandlerFn] = None
     ) -> None:
         if not default_handlers:
             default_handlers = {}
@@ -50,7 +45,7 @@ class Multiselect(IMultiselectMuxer):
 
     async def negotiate(
         self, communicator: IMultiselectCommunicator
-    ) -> Tuple[TProtocol, StreamHandlerFn]:
+    ) -> tuple[TProtocol, StreamHandlerFn]:
         """
         Negotiate performs protocol selection.
 

libp2p/protocol_muxer/multiselect_client.py

@@ -1,4 +1,4 @@
-from typing import (
+from collections.abc import (
     Sequence,
 )
 

libp2p/protocol_muxer/multiselect_client_interface.py

@@ -2,7 +2,7 @@ from abc import (
     ABC,
     abstractmethod,
 )
-from typing import (
+from collections.abc import (
     Sequence,
 )
 

libp2p/protocol_muxer/multiselect_muxer_interface.py

@@ -2,10 +2,6 @@ from abc import (
     ABC,
     abstractmethod,
 )
-from typing import (
-    Dict,
-    Tuple,
-)
 
 from libp2p.typing import (
     StreamHandlerFn,
@@ -24,7 +20,7 @@ class IMultiselectMuxer(ABC):
     communication.
     """
 
-    handlers: Dict[TProtocol, StreamHandlerFn]
+    handlers: dict[TProtocol, StreamHandlerFn]
 
     @abstractmethod
     def add_handler(self, protocol: TProtocol, handler: StreamHandlerFn) -> None:
@@ -35,13 +31,13 @@ class IMultiselectMuxer(ABC):
         :param handler: handler function
         """
 
-    def get_protocols(self) -> Tuple[TProtocol, ...]:
+    def get_protocols(self) -> tuple[TProtocol, ...]:
         return tuple(self.handlers.keys())
 
     @abstractmethod
     async def negotiate(
         self, communicator: IMultiselectCommunicator
-    ) -> Tuple[TProtocol, StreamHandlerFn]:
+    ) -> tuple[TProtocol, StreamHandlerFn]:
         """
         Negotiate performs protocol selection.
 

libp2p/pubsub/abc.py

@@ -2,13 +2,13 @@ from abc import (
     ABC,
     abstractmethod,
 )
+from collections.abc import (
+    AsyncIterable,
+    KeysView,
+)
 from typing import (
     TYPE_CHECKING,
     AsyncContextManager,
-    AsyncIterable,
-    KeysView,
-    List,
-    Tuple,
 )
 
 from libp2p.peer.id import (
@@ -46,7 +46,7 @@ class ISubscriptionAPI(
 
 class IPubsubRouter(ABC):
     @abstractmethod
-    def get_protocols(self) -> List[TProtocol]:
+    def get_protocols(self) -> list[TProtocol]:
         """
         :return: the list of protocols supported by the router
         """
@@ -123,7 +123,7 @@ class IPubsub(ServiceAPI):
 
     @property
     @abstractmethod
-    def protocols(self) -> Tuple[TProtocol, ...]:
+    def protocols(self) -> tuple[TProtocol, ...]:
         ...
 
     @property

libp2p/pubsub/floodsub.py

@@ -1,9 +1,8 @@
-import logging
-from typing import (
+from collections.abc import (
     Iterable,
-    List,
     Sequence,
 )
+import logging
 
 import trio
 
@@ -36,7 +35,7 @@ logger = logging.getLogger("libp2p.pubsub.floodsub")
 
 
 class FloodSub(IPubsubRouter):
-    protocols: List[TProtocol]
+    protocols: list[TProtocol]
 
     pubsub: Pubsub
 
@@ -44,7 +43,7 @@ class FloodSub(IPubsubRouter):
         self.protocols = list(protocols)
         self.pubsub = None
 
-    def get_protocols(self) -> List[TProtocol]:
+    def get_protocols(self) -> list[TProtocol]:
         """
         :return: the list of protocols supported by the router
         """

libp2p/pubsub/gossipsub.py

@@ -4,17 +4,15 @@ from ast import (
 from collections import (
     defaultdict,
 )
+from collections.abc import (
+    Iterable,
+    Sequence,
+)
 import logging
 import random
 from typing import (
     Any,
     DefaultDict,
-    Dict,
-    Iterable,
-    List,
-    Sequence,
-    Set,
-    Tuple,
 )
 
 import trio
@@ -60,7 +58,7 @@ logger = logging.getLogger("libp2p.pubsub.gossipsub")
 
 
 class GossipSub(IPubsubRouter, Service):
-    protocols: List[TProtocol]
+    protocols: list[TProtocol]
     pubsub: Pubsub
 
     degree: int
@@ -69,11 +67,11 @@ class GossipSub(IPubsubRouter, Service):
 
     time_to_live: int
 
-    mesh: Dict[str, Set[ID]]
-    fanout: Dict[str, Set[ID]]
+    mesh: dict[str, set[ID]]
+    fanout: dict[str, set[ID]]
 
     # The protocol peer supports
-    peer_protocol: Dict[ID, TProtocol]
+    peer_protocol: dict[ID, TProtocol]
 
     # TODO: Add `time_since_last_publish`
     #   Create topic --> time since last publish map.
@@ -128,7 +126,7 @@ class GossipSub(IPubsubRouter, Service):
 
     # Interface functions
 
-    def get_protocols(self) -> List[TProtocol]:
+    def get_protocols(self) -> list[TProtocol]:
         """
         :return: the list of protocols supported by the router
         """
@@ -237,13 +235,13 @@ class GossipSub(IPubsubRouter, Service):
         :param origin: peer id of the peer the message originate from.
         :return: a generator of the peer ids who we send data to.
         """
-        send_to: Set[ID] = set()
+        send_to: set[ID] = set()
         for topic in topic_ids:
             if topic not in self.pubsub.peer_topics:
                 continue
 
             # floodsub peers
-            floodsub_peers: Set[ID] = {
+            floodsub_peers: set[ID] = {
                 peer_id
                 for peer_id in self.pubsub.peer_topics[topic]
                 if self.peer_protocol[peer_id] == floodsub.PROTOCOL_ID
@@ -251,7 +249,7 @@ class GossipSub(IPubsubRouter, Service):
             send_to.update(floodsub_peers)
 
             # gossipsub peers
-            gossipsub_peers: Set[ID] = set()
+            gossipsub_peers: set[ID] = set()
             if topic in self.mesh:
                 gossipsub_peers = self.mesh[topic]
             else:
@@ -259,7 +257,7 @@ class GossipSub(IPubsubRouter, Service):
                 # pick `self.degree` number of peers who have subscribed to the topic
                 # and add them as our `fanout` peers.
                 topic_in_fanout: bool = topic in self.fanout
-                fanout_peers: Set[ID] = self.fanout[topic] if topic_in_fanout else set()
+                fanout_peers: set[ID] = self.fanout[topic] if topic_in_fanout else set()
                 fanout_size = len(fanout_peers)
                 if not topic_in_fanout or (
                     topic_in_fanout and fanout_size < self.degree
@@ -292,7 +290,7 @@ class GossipSub(IPubsubRouter, Service):
         self.mesh[topic] = set()
 
         topic_in_fanout: bool = topic in self.fanout
-        fanout_peers: Set[ID] = self.fanout[topic] if topic_in_fanout else set()
+        fanout_peers: set[ID] = self.fanout[topic] if topic_in_fanout else set()
         fanout_size = len(fanout_peers)
         if not topic_in_fanout or (topic_in_fanout and fanout_size < self.degree):
             # There are less than D peers (let this number be x)
@@ -333,13 +331,13 @@ class GossipSub(IPubsubRouter, Service):
 
     async def _emit_control_msgs(
         self,
-        peers_to_graft: Dict[ID, List[str]],
-        peers_to_prune: Dict[ID, List[str]],
-        peers_to_gossip: Dict[ID, Dict[str, List[str]]],
+        peers_to_graft: dict[ID, list[str]],
+        peers_to_prune: dict[ID, list[str]],
+        peers_to_gossip: dict[ID, dict[str, list[str]]],
     ) -> None:
-        graft_msgs: List[rpc_pb2.ControlGraft] = []
-        prune_msgs: List[rpc_pb2.ControlPrune] = []
-        ihave_msgs: List[rpc_pb2.ControlIHave] = []
+        graft_msgs: list[rpc_pb2.ControlGraft] = []
+        prune_msgs: list[rpc_pb2.ControlPrune] = []
+        ihave_msgs: list[rpc_pb2.ControlIHave] = []
         # Starting with GRAFT messages
         for peer, topics in peers_to_graft.items():
             for topic in topics:
@@ -428,9 +426,9 @@ class GossipSub(IPubsubRouter, Service):
 
     def mesh_heartbeat(
         self,
-    ) -> Tuple[DefaultDict[ID, List[str]], DefaultDict[ID, List[str]]]:
-        peers_to_graft: DefaultDict[ID, List[str]] = defaultdict(list)
-        peers_to_prune: DefaultDict[ID, List[str]] = defaultdict(list)
+    ) -> tuple[DefaultDict[ID, list[str]], DefaultDict[ID, list[str]]]:
+        peers_to_graft: DefaultDict[ID, list[str]] = defaultdict(list)
+        peers_to_prune: DefaultDict[ID, list[str]] = defaultdict(list)
         for topic in self.mesh:
             # Skip if no peers have subscribed to the topic
             if topic not in self.pubsub.peer_topics:
@@ -493,8 +491,8 @@ class GossipSub(IPubsubRouter, Service):
                     # Add the peers to fanout[topic]
                     self.fanout[topic].update(selected_peers)
 
-    def gossip_heartbeat(self) -> DefaultDict[ID, Dict[str, List[str]]]:
-        peers_to_gossip: DefaultDict[ID, Dict[str, List[str]]] = defaultdict(dict)
+    def gossip_heartbeat(self) -> DefaultDict[ID, dict[str, list[str]]]:
+        peers_to_gossip: DefaultDict[ID, dict[str, list[str]]] = defaultdict(dict)
         for topic in self.mesh:
             msg_ids = self.mcache.window(topic)
             if msg_ids:
@@ -534,7 +532,7 @@ class GossipSub(IPubsubRouter, Service):
     @staticmethod
     def select_from_minus(
         num_to_select: int, pool: Iterable[Any], minus: Iterable[Any]
-    ) -> List[Any]:
+    ) -> list[Any]:
         """
         Select at most num_to_select subset of elements from the set
         (pool - minus) randomly.
@@ -546,7 +544,7 @@ class GossipSub(IPubsubRouter, Service):
         # Create selection pool, which is selection_pool = pool - minus
         if minus:
             # Create a new selection pool by removing elements of minus
-            selection_pool: List[Any] = [x for x in pool if x not in minus]
+            selection_pool: list[Any] = [x for x in pool if x not in minus]
         else:
             # Don't create a new selection_pool if we are not subbing anything
             selection_pool = list(pool)
@@ -558,13 +556,13 @@ class GossipSub(IPubsubRouter, Service):
             return selection_pool
 
         # Random selection
-        selection: List[Any] = random.sample(selection_pool, num_to_select)
+        selection: list[Any] = random.sample(selection_pool, num_to_select)
 
         return selection
 
     def _get_in_topic_gossipsub_peers_from_minus(
         self, topic: str, num_to_select: int, minus: Iterable[ID]
-    ) -> List[ID]:
+    ) -> list[ID]:
         gossipsub_peers_in_topic = {
             peer_id
             for peer_id in self.pubsub.peer_topics[topic]
@@ -587,7 +585,7 @@ class GossipSub(IPubsubRouter, Service):
         # Add all unknown message ids (ids that appear in ihave_msg but not in
         # seen_seqnos) to list of messages we want to request
         # FIXME: Update type of message ID
-        msg_ids_wanted: List[Any] = [
+        msg_ids_wanted: list[Any] = [
             msg_id
             for msg_id in ihave_msg.messageIDs
             if literal_eval(msg_id) not in seen_seqnos_and_peers
@@ -606,8 +604,8 @@ class GossipSub(IPubsubRouter, Service):
         """
         # FIXME: Update type of message ID
         # FIXME: Find a better way to parse the msg ids
-        msg_ids: List[Any] = [literal_eval(msg) for msg in iwant_msg.messageIDs]
-        msgs_to_forward: List[rpc_pb2.Message] = []
+        msg_ids: list[Any] = [literal_eval(msg) for msg in iwant_msg.messageIDs]
+        msgs_to_forward: list[rpc_pb2.Message] = []
         for msg_id_iwant in msg_ids:
             # Check if the wanted message ID is present in mcache
             msg: rpc_pb2.Message = self.mcache.get(msg_id_iwant)
@@ -674,9 +672,9 @@ class GossipSub(IPubsubRouter, Service):
 
     def pack_control_msgs(
         self,
-        ihave_msgs: List[rpc_pb2.ControlIHave],
-        graft_msgs: List[rpc_pb2.ControlGraft],
-        prune_msgs: List[rpc_pb2.ControlPrune],
+        ihave_msgs: list[rpc_pb2.ControlIHave],
+        graft_msgs: list[rpc_pb2.ControlGraft],
+        prune_msgs: list[rpc_pb2.ControlPrune],
     ) -> rpc_pb2.ControlMessage:
         control_msg: rpc_pb2.ControlMessage = rpc_pb2.ControlMessage()
         if ihave_msgs:

libp2p/pubsub/mcache.py

@@ -1,9 +1,8 @@
-from typing import (
-    Dict,
-    List,
-    Optional,
+from collections.abc import (
     Sequence,
-    Tuple,
+)
+from typing import (
+    Optional,
 )
 
 from .pb import (
@@ -12,14 +11,14 @@ from .pb import (
 
 
 class CacheEntry:
-    mid: Tuple[bytes, bytes]
-    topics: List[str]
+    mid: tuple[bytes, bytes]
+    topics: list[str]
 
     """
     A logical representation of an entry in the mcache's _history_.
     """
 
-    def __init__(self, mid: Tuple[bytes, bytes], topics: Sequence[str]) -> None:
+    def __init__(self, mid: tuple[bytes, bytes], topics: Sequence[str]) -> None:
         """
         Constructor.
 
@@ -34,9 +33,9 @@ class MessageCache:
     window_size: int
     history_size: int
 
-    msgs: Dict[Tuple[bytes, bytes], rpc_pb2.Message]
+    msgs: dict[tuple[bytes, bytes], rpc_pb2.Message]
 
-    history: List[List[CacheEntry]]
+    history: list[list[CacheEntry]]
 
     def __init__(self, window_size: int, history_size: int) -> None:
         """
@@ -62,12 +61,12 @@ class MessageCache:
 
         :param msg: The rpc message to put in. Should contain seqno and from_id
         """
-        mid: Tuple[bytes, bytes] = (msg.seqno, msg.from_id)
+        mid: tuple[bytes, bytes] = (msg.seqno, msg.from_id)
         self.msgs[mid] = msg
 
         self.history[0].append(CacheEntry(mid, msg.topicIDs))
 
-    def get(self, mid: Tuple[bytes, bytes]) -> Optional[rpc_pb2.Message]:
+    def get(self, mid: tuple[bytes, bytes]) -> Optional[rpc_pb2.Message]:
         """
         Get a message from the mcache.
 
@@ -79,14 +78,14 @@ class MessageCache:
 
         return None
 
-    def window(self, topic: str) -> List[Tuple[bytes, bytes]]:
+    def window(self, topic: str) -> list[tuple[bytes, bytes]]:
         """
         Get the window for this topic.
 
         :param topic: Topic whose message ids we desire.
         :return: List of mids in the current window.
         """
-        mids: List[Tuple[bytes, bytes]] = []
+        mids: list[tuple[bytes, bytes]] = []
 
         for entries_list in self.history[: self.window_size]:
             for entry in entries_list:
@@ -100,7 +99,7 @@ class MessageCache:
         """
         Shift the window over by 1 position, dropping the last element of the history.
         """
-        last_entries: List[CacheEntry] = self.history[len(self.history) - 1]
+        last_entries: list[CacheEntry] = self.history[len(self.history) - 1]
 
         for entry in last_entries:
             self.msgs.pop(entry.mid)

libp2p/pubsub/pubsub.py

@@ -3,6 +3,9 @@ from __future__ import (
 )
 
 import base64
+from collections.abc import (
+    KeysView,
+)
 import functools
 import hashlib
 import logging
@@ -10,7 +13,6 @@ import time
 from typing import (
     TYPE_CHECKING,
     Callable,
-    KeysView,
     NamedTuple,
     cast,
 )

libp2p/pubsub/subscription.py

@@ -1,8 +1,10 @@
+from collections.abc import (
+    AsyncIterator,
+)
 from types import (
     TracebackType,
 )
 from typing import (
-    AsyncIterator,
     Optional,
     Type,
 )

libp2p/pubsub/typing.py

@@ -1,5 +1,7 @@
-from typing import (
+from collections.abc import (
     Awaitable,
+)
+from typing import (
     Callable,
     Union,
 )

libp2p/routing/interfaces.py

@@ -2,7 +2,7 @@ from abc import (
     ABC,
     abstractmethod,
 )
-from typing import (
+from collections.abc import (
     Iterable,
 )
 

libp2p/security/secio/transport.py

@@ -4,7 +4,6 @@ from dataclasses import (
 import itertools
 from typing import (
     Optional,
-    Tuple,
 )
 
 import multihash
@@ -243,7 +242,7 @@ def _select_parameter_from_order(
 
 def _select_encryption_parameters(
     local_proposal: Proposal, remote_proposal: Proposal
-) -> Tuple[str, str, str, int]:
+) -> tuple[str, str, str, int]:
     first_score = _mk_score(remote_proposal.public_key, local_proposal.nonce)
     second_score = _mk_score(local_proposal.public_key, remote_proposal.nonce)
 
@@ -276,7 +275,7 @@ async def _establish_session_parameters(
     remote_peer: Optional[PeerID],
     conn: SecioPacketReadWriter,
     nonce: bytes,
-) -> Tuple[SessionParameters, bytes]:
+) -> tuple[SessionParameters, bytes]:
     # establish shared encryption parameters
     session_parameters = SessionParameters()
     session_parameters.local_peer = local_peer

libp2p/stream_muxer/mplex/mplex.py

@@ -1,8 +1,6 @@
 import logging
 from typing import (
-    Dict,
     Optional,
-    Tuple,
 )
 
 import trio
@@ -64,9 +62,9 @@ class Mplex(IMuxedConn):
     secured_conn: ISecureConn
     peer_id: ID
     next_channel_id: int
-    streams: Dict[StreamID, MplexStream]
+    streams: dict[StreamID, MplexStream]
     streams_lock: trio.Lock
-    streams_msg_channels: Dict[StreamID, "trio.MemorySendChannel[bytes]"]
+    streams_msg_channels: dict[StreamID, "trio.MemorySendChannel[bytes]"]
     new_stream_send_channel: "trio.MemorySendChannel[IMuxedStream]"
     new_stream_receive_channel: "trio.MemoryReceiveChannel[IMuxedStream]"
 
@@ -222,7 +220,7 @@ class Mplex(IMuxedConn):
         # We should clean things up.
         await self._cleanup()
 
-    async def read_message(self) -> Tuple[int, int, bytes]:
+    async def read_message(self) -> tuple[int, int, bytes]:
         """
         Read a single message off of the secured connection.
 

libp2p/tools/async_service/abc.py

@@ -4,11 +4,12 @@ from abc import (
     ABC,
     abstractmethod,
 )
+from collections.abc import (
+    Hashable,
+)
 from typing import (
     Any,
-    Hashable,
     Optional,
-    Set,
 )
 
 import trio_typing
@@ -45,7 +46,7 @@ class TaskAPI(Hashable):
 
 
 class TaskWithChildrenAPI(TaskAPI):
-    children: Set[TaskAPI]
+    children: set[TaskAPI]
 
     @abstractmethod
     def add_child(self, child: TaskAPI) -> None:

libp2p/tools/async_service/base.py

@@ -7,18 +7,17 @@ import asyncio
 from collections import (
     Counter,
 )
+from collections.abc import (
+    Awaitable,
+    Iterable,
+    Sequence,
+)
 import logging
 import sys
 from typing import (
     Any,
-    Awaitable,
     Callable,
-    Iterable,
-    List,
     Optional,
-    Sequence,
-    Set,
-    Type,
     TypeVar,
     cast,
 )
@@ -79,7 +78,7 @@ class Service(ServiceAPI):
 LogicFnType = Callable[..., Awaitable[Any]]
 
 
-def as_service(service_fn: LogicFnType) -> Type[ServiceAPI]:
+def as_service(service_fn: LogicFnType) -> type[ServiceAPI]:
     """
     Create a service out of a simple function
     """
@@ -143,7 +142,7 @@ T = TypeVar("T", bound="BaseFunctionTask")
 
 class BaseFunctionTask(BaseTaskWithChildren):
     @classmethod
-    def iterate_tasks(cls: Type[T], *tasks: TaskAPI) -> Iterable[T]:
+    def iterate_tasks(cls: type[T], *tasks: TaskAPI) -> Iterable[T]:
         for task in tasks:
             if isinstance(task, cls):
                 yield task
@@ -206,7 +205,7 @@ class BaseManager(InternalManagerAPI):
 
     _service: ServiceAPI
 
-    _errors: List[EXC_INFO]
+    _errors: list[EXC_INFO]
 
     def __init__(self, service: ServiceAPI) -> None:
         if hasattr(service, "_manager"):
@@ -220,7 +219,7 @@ class BaseManager(InternalManagerAPI):
         self._errors = []
 
         # tasks
-        self._root_tasks: Set[TaskAPI] = set()
+        self._root_tasks: set[TaskAPI] = set()
 
         # stats
         self._total_task_count = 0

libp2p/tools/async_service/trio_service.py

@@ -3,6 +3,12 @@ from __future__ import (
     annotations,
 )
 
+from collections.abc import (
+    AsyncIterator,
+    Awaitable,
+    Coroutine,
+    Sequence,
+)
 from contextlib import (
     asynccontextmanager,
 )
@@ -10,13 +16,8 @@ import functools
 import sys
 from typing import (
     Any,
-    AsyncIterator,
-    Awaitable,
     Callable,
-    Coroutine,
     Optional,
-    Sequence,
-    Tuple,
     TypeVar,
     cast,
 )
@@ -337,7 +338,7 @@ class TrioManager(BaseManager):
 TFunc = TypeVar("TFunc", bound=Callable[..., Coroutine[Any, Any, Any]])
 
 
-_ChannelPayload = Tuple[Optional[Any], Optional[BaseException]]
+_ChannelPayload = tuple[Optional[Any], Optional[BaseException]]
 
 
 async def _wait_finished(

libp2p/tools/async_service/typing.py

@@ -1,16 +1,16 @@
 # Copied from https://github.com/ethereum/async-service
 
+from collections.abc import (
+    Awaitable,
+)
 from types import (
     TracebackType,
 )
 from typing import (
     Any,
-    Awaitable,
     Callable,
-    Tuple,
-    Type,
 )
 
-EXC_INFO = Tuple[Type[BaseException], BaseException, TracebackType]
+EXC_INFO = tuple[type[BaseException], BaseException, TracebackType]
 
 AsyncFn = Callable[..., Awaitable[Any]]

libp2p/tools/factories.py

@@ -1,15 +1,14 @@
+from collections.abc import (
+    AsyncIterator,
+    Sequence,
+)
 from contextlib import (
     AsyncExitStack,
     asynccontextmanager,
 )
 from typing import (
     Any,
-    AsyncIterator,
     Callable,
-    Dict,
-    List,
-    Sequence,
-    Tuple,
     cast,
 )
 
@@ -222,7 +221,7 @@ def default_muxer_transport_factory() -> TMuxerOptions:
 @asynccontextmanager
 async def raw_conn_factory(
     nursery: trio.Nursery,
-) -> AsyncIterator[Tuple[IRawConnection, IRawConnection]]:
+) -> AsyncIterator[tuple[IRawConnection, IRawConnection]]:
     conn_0 = None
     conn_1 = None
     event = trio.Event()
@@ -245,7 +244,7 @@ async def raw_conn_factory(
 @asynccontextmanager
 async def noise_conn_factory(
     nursery: trio.Nursery,
-) -> AsyncIterator[Tuple[ISecureConn, ISecureConn]]:
+) -> AsyncIterator[tuple[ISecureConn, ISecureConn]]:
     local_transport = cast(
         NoiseTransport, noise_transport_factory(create_secp256k1_key_pair())
     )
@@ -312,7 +311,7 @@ class SwarmFactory(factory.Factory):
         # `factory.Factory.__init__` does *not* prepare a *default value* if we pass
         # an argument explicitly with `None`. If an argument is `None`, we don't pass it
         # to `factory.Factory.__init__`, in order to let the function initialize it.
-        optional_kwargs: Dict[str, Any] = {}
+        optional_kwargs: dict[str, Any] = {}
         if key_pair is not None:
             optional_kwargs["key_pair"] = key_pair
         if security_protocol is not None:
@@ -331,7 +330,7 @@ class SwarmFactory(factory.Factory):
         number: int,
         security_protocol: TProtocol = None,
         muxer_opt: TMuxerOptions = None,
-    ) -> AsyncIterator[Tuple[Swarm, ...]]:
+    ) -> AsyncIterator[tuple[Swarm, ...]]:
         async with AsyncExitStack() as stack:
             ctx_mgrs = [
                 await stack.enter_async_context(
@@ -366,7 +365,7 @@ class HostFactory(factory.Factory):
         number: int,
         security_protocol: TProtocol = None,
         muxer_opt: TMuxerOptions = None,
-    ) -> AsyncIterator[Tuple[BasicHost, ...]]:
+    ) -> AsyncIterator[tuple[BasicHost, ...]]:
         async with SwarmFactory.create_batch_and_listen(
             number, security_protocol=security_protocol, muxer_opt=muxer_opt
         ) as swarms:
@@ -375,12 +374,12 @@ class HostFactory(factory.Factory):
 
 
 class DummyRouter(IPeerRouting):
-    _routing_table: Dict[ID, PeerInfo]
+    _routing_table: dict[ID, PeerInfo]
 
     def __init__(self) -> None:
         self._routing_table = dict()
 
-    def _add_peer(self, peer_id: ID, addrs: List[Multiaddr]) -> None:
+    def _add_peer(self, peer_id: ID, addrs: list[Multiaddr]) -> None:
         self._routing_table[peer_id] = PeerInfo(peer_id, addrs)
 
     async def find_peer(self, peer_id: ID) -> PeerInfo:
@@ -411,7 +410,7 @@ class RoutedHostFactory(factory.Factory):
         number: int,
         security_protocol: TProtocol = None,
         muxer_opt: TMuxerOptions = None,
-    ) -> AsyncIterator[Tuple[RoutedHost, ...]]:
+    ) -> AsyncIterator[tuple[RoutedHost, ...]]:
         routing_table = DummyRouter()
         async with HostFactory.create_batch_and_listen(
             number, security_protocol=security_protocol, muxer_opt=muxer_opt
@@ -487,7 +486,7 @@ class PubsubFactory(factory.Factory):
         security_protocol: TProtocol = None,
         muxer_opt: TMuxerOptions = None,
         msg_id_constructor: Callable[[rpc_pb2.Message], bytes] = None,
-    ) -> AsyncIterator[Tuple[Pubsub, ...]]:
+    ) -> AsyncIterator[tuple[Pubsub, ...]]:
         async with HostFactory.create_batch_and_listen(
             number, security_protocol=security_protocol, muxer_opt=muxer_opt
         ) as hosts:
@@ -516,7 +515,7 @@ class PubsubFactory(factory.Factory):
         msg_id_constructor: Callable[
             [rpc_pb2.Message], bytes
         ] = get_peer_and_seqno_msg_id,
-    ) -> AsyncIterator[Tuple[Pubsub, ...]]:
+    ) -> AsyncIterator[tuple[Pubsub, ...]]:
         if protocols is not None:
             floodsubs = FloodsubFactory.create_batch(number, protocols=list(protocols))
         else:
@@ -554,7 +553,7 @@ class PubsubFactory(factory.Factory):
         msg_id_constructor: Callable[
             [rpc_pb2.Message], bytes
         ] = get_peer_and_seqno_msg_id,
-    ) -> AsyncIterator[Tuple[Pubsub, ...]]:
+    ) -> AsyncIterator[tuple[Pubsub, ...]]:
         if protocols is not None:
             gossipsubs = GossipsubFactory.create_batch(
                 number,
@@ -595,7 +594,7 @@ class PubsubFactory(factory.Factory):
 @asynccontextmanager
 async def swarm_pair_factory(
     security_protocol: TProtocol = None, muxer_opt: TMuxerOptions = None
-) -> AsyncIterator[Tuple[Swarm, Swarm]]:
+) -> AsyncIterator[tuple[Swarm, Swarm]]:
     async with SwarmFactory.create_batch_and_listen(
         2, security_protocol=security_protocol, muxer_opt=muxer_opt
     ) as swarms:
@@ -606,7 +605,7 @@ async def swarm_pair_factory(
 @asynccontextmanager
 async def host_pair_factory(
     security_protocol: TProtocol = None, muxer_opt: TMuxerOptions = None
-) -> AsyncIterator[Tuple[BasicHost, BasicHost]]:
+) -> AsyncIterator[tuple[BasicHost, BasicHost]]:
     async with HostFactory.create_batch_and_listen(
         2, security_protocol=security_protocol, muxer_opt=muxer_opt
     ) as hosts:
@@ -617,7 +616,7 @@ async def host_pair_factory(
 @asynccontextmanager
 async def swarm_conn_pair_factory(
     security_protocol: TProtocol = None, muxer_opt: TMuxerOptions = None
-) -> AsyncIterator[Tuple[SwarmConn, SwarmConn]]:
+) -> AsyncIterator[tuple[SwarmConn, SwarmConn]]:
     async with swarm_pair_factory(
         security_protocol=security_protocol, muxer_opt=muxer_opt
     ) as swarms:
@@ -629,7 +628,7 @@ async def swarm_conn_pair_factory(
 @asynccontextmanager
 async def mplex_conn_pair_factory(
     security_protocol: TProtocol = None,
-) -> AsyncIterator[Tuple[Mplex, Mplex]]:
+) -> AsyncIterator[tuple[Mplex, Mplex]]:
     async with swarm_conn_pair_factory(
         security_protocol=security_protocol, muxer_opt=default_muxer_transport_factory()
     ) as swarm_pair:
@@ -642,7 +641,7 @@ async def mplex_conn_pair_factory(
 @asynccontextmanager
 async def mplex_stream_pair_factory(
     security_protocol: TProtocol = None,
-) -> AsyncIterator[Tuple[MplexStream, MplexStream]]:
+) -> AsyncIterator[tuple[MplexStream, MplexStream]]:
     async with mplex_conn_pair_factory(
         security_protocol=security_protocol
     ) as mplex_conn_pair_info:
@@ -660,7 +659,7 @@ async def mplex_stream_pair_factory(
 @asynccontextmanager
 async def net_stream_pair_factory(
     security_protocol: TProtocol = None, muxer_opt: TMuxerOptions = None
-) -> AsyncIterator[Tuple[INetStream, INetStream]]:
+) -> AsyncIterator[tuple[INetStream, INetStream]]:
     protocol_id = TProtocol("/example/id/1")
 
     stream_1: INetStream

libp2p/tools/pubsub/dummy_account_node.py

@@ -1,12 +1,10 @@
+from collections.abc import (
+    AsyncIterator,
+)
 from contextlib import (
     AsyncExitStack,
     asynccontextmanager,
 )
-from typing import (
-    AsyncIterator,
-    Dict,
-    Tuple,
-)
 
 from libp2p.host.host_interface import (
     IHost,
@@ -45,7 +43,7 @@ class DummyAccountNode(Service):
 
     def __init__(self, pubsub: Pubsub) -> None:
         self.pubsub = pubsub
-        self.balances: Dict[str, int] = {}
+        self.balances: dict[str, int] = {}
 
     @property
     def host(self) -> IHost:
@@ -58,7 +56,7 @@ class DummyAccountNode(Service):
 
     @classmethod
     @asynccontextmanager
-    async def create(cls, number: int) -> AsyncIterator[Tuple["DummyAccountNode", ...]]:
+    async def create(cls, number: int) -> AsyncIterator[tuple["DummyAccountNode", ...]]:
         """
         Create a new DummyAccountNode and attach a libp2p node, a floodsub, and
         a pubsub instance to this new node.

libp2p/tools/pubsub/utils.py

@@ -1,4 +1,4 @@
-from typing import (
+from collections.abc import (
     Sequence,
 )
 

libp2p/tools/utils.py

@@ -1,5 +1,7 @@
-from typing import (
+from collections.abc import (
     Awaitable,
+)
+from typing import (
     Callable,
 )
 

libp2p/transport/listener_interface.py

@@ -2,9 +2,6 @@ from abc import (
     ABC,
     abstractmethod,
 )
-from typing import (
-    Tuple,
-)
 
 from multiaddr import (
     Multiaddr,
@@ -23,7 +20,7 @@ class IListener(ABC):
         """
 
     @abstractmethod
-    def get_addrs(self) -> Tuple[Multiaddr, ...]:
+    def get_addrs(self) -> tuple[Multiaddr, ...]:
         """
         Retrieve list of addresses the listener is listening on.
 

libp2p/transport/tcp/tcp.py

@@ -1,10 +1,10 @@
+from collections.abc import (
+    Awaitable,
+    Sequence,
+)
 import logging
 from typing import (
-    Awaitable,
     Callable,
-    List,
-    Sequence,
-    Tuple,
 )
 
 from multiaddr import (
@@ -41,7 +41,7 @@ logger = logging.getLogger("libp2p.transport.tcp")
 
 
 class TCPListener(IListener):
-    listeners: List[trio.SocketListener]
+    listeners: list[trio.SocketListener]
 
     def __init__(self, handler_function: THandler) -> None:
         self.listeners = []
@@ -78,7 +78,7 @@ class TCPListener(IListener):
         )
         self.listeners.extend(listeners)
 
-    def get_addrs(self) -> Tuple[Multiaddr, ...]:
+    def get_addrs(self) -> tuple[Multiaddr, ...]:
         """
         Retrieve list of addresses the listener is listening on.
 

libp2p/transport/typing.py

@@ -1,8 +1,9 @@
-from typing import (
+from collections.abc import (
     Awaitable,
-    Callable,
     Mapping,
-    Type,
+)
+from typing import (
+    Callable,
 )
 
 from libp2p.io.abc import (
@@ -20,5 +21,5 @@ from libp2p.typing import (
 
 THandler = Callable[[ReadWriteCloser], Awaitable[None]]
 TSecurityOptions = Mapping[TProtocol, ISecureTransport]
-TMuxerClass = Type[IMuxedConn]
+TMuxerClass = type[IMuxedConn]
 TMuxerOptions = Mapping[TProtocol, TMuxerClass]

libp2p/typing.py

@@ -1,6 +1,8 @@
+from collections.abc import (
+    Awaitable,
+)
 from typing import (
     TYPE_CHECKING,
-    Awaitable,
     Callable,
     NewType,
 )

newsfragments/497.internal.rst

@@ -0,0 +1 @@
+Drop CI runs for python 3.8, run ``pyupgrade`` to bring code up to python 3.9.

tests/utils/interop/daemon.py

@@ -1,9 +1,9 @@
+from collections.abc import (
+    AsyncIterator,
+)
 from contextlib import (
     asynccontextmanager,
 )
-from typing import (
-    AsyncIterator,
-)
 
 import multiaddr
 from multiaddr import (

tests/utils/interop/process.py

@@ -2,11 +2,10 @@ from abc import (
     ABC,
     abstractmethod,
 )
-import subprocess
-from typing import (
+from collections.abc import (
     Iterable,
-    List,
 )
+import subprocess
 
 import trio
 
@@ -26,7 +25,7 @@ class AbstractInterativeProcess(ABC):
 class BaseInteractiveProcess(AbstractInterativeProcess):
     proc: trio.Process = None
     cmd: str
-    args: List[str]
+    args: list[str]
     bytes_read: bytearray
     patterns: Iterable[bytes] = None
     event_ready: trio.Event