ft. modernise py-libp2p (#618)

* fix pyproject.toml , add ruff

* rm lock

* make progress

* add poetry lock ignore

* fix type issues

* fix tcp type errors

* fix text example - type error - wrong args

* add setuptools to dev

* test ci

* fix docs build

* fix type issues for new_swarm & new_host

* fix types in gossipsub

* fix type issues in noise

* wip: factories

* revert factories

* fix more type issues

* more type fixes

* fix: add null checks for noise protocol initialization and key handling

* corrected argument-errors in peerId and Multiaddr in peer tests

* fix: Noice - remove redundant type casts in BaseNoiseMsgReadWriter

* fix: update test_notify.py to use SwarmFactory.create_batch_and_listen, fix type hints, and comment out ClosedStream assertions

* Fix type checks for pubsub module

Signed-off-by: sukhman <sukhmansinghsaluja@gmail.com>

* Fix type checks for pubsub module-tests

Signed-off-by: sukhman <sukhmansinghsaluja@gmail.com>

* noise: add checks for uninitialized protocol and key states in PatternXX

Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>

* pubsub: add None checks for optional fields in FloodSub and Pubsub

Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>

* Fix type hints and improve testing

Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>

* remove redundant checks

Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>

* fix build issues

* add optional to trio service

* fix types

* fix type errors

* Fix type errors

Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>

* fixed more-type checks in crypto and peer_data files

* wip: factories

* replaced union with optional

* fix: type-error in interp-utils and peerinfo

* replace pyright with pyrefly

* add pyrefly.toml

* wip: fix multiselect issues

* try typecheck

* base check

* mcache test fixes , typecheck ci update

* fix ci

* will this work

* minor fix

* use poetry

* fix wokflow

* use cache,fix err

* fix pyrefly.toml

* fix pyrefly.toml

* fix cache in ci

* deploy commit

* add main baseline

* update to v5

* improve typecheck ci (#14)

* fix typo

* remove holepunching code (#16)

* fix gossipsub typeerrors (#17)

* fix: ensure initiator user includes remote peer id in handshake (#15)

* fix ci (#19)

* typefix: custom_types | core/peerinfo/test_peer_info | io/abc | pubsub/floodsub | protocol_muxer/multiselect (#18)

* fix: Typefixes in PeerInfo  (#21)

* fix minor type issue (#22)

* fix type errors in pubsub (#24)

* fix: Minor typefixes in tests (#23)

* Fix failing tests for type-fixed test/pubsub (#8)

* move pyrefly & ruff to pyproject.toml & rm .project-template (#28)

* move the async_context file to tests/core

* move crypto test to crypto folder

* fix: some typefixes (#25)

* fix type errors

* fix type issues

* fix: update gRPC API usage in autonat_pb2_grpc.py (#31)

* md: typecheck ci

* rm comments

* clean up : from review suggestions

* use | None over Optional as per new python standards

* drop supporto for py3.9

* newsfragments

---------

Signed-off-by: sukhman <sukhmansinghsaluja@gmail.com>
Signed-off-by: varun-r-mallya <varunrmallya@gmail.com>
Co-authored-by: acul71 <luca.pisani@birdo.net>
Co-authored-by: kaneki003 <sakshamchauhan707@gmail.com>
Co-authored-by: sukhman <sukhmansinghsaluja@gmail.com>
Co-authored-by: varun-r-mallya <varunrmallya@gmail.com>
Co-authored-by: varunrmallya <100590632+varun-r-mallya@users.noreply.github.com>
Co-authored-by: lla-dane <abhinavagarwalla6@gmail.com>
Co-authored-by: Collins <ArtemisfowlX@protonmail.com>
Co-authored-by: Abhinav Agarwalla <120122716+lla-dane@users.noreply.github.com>
Co-authored-by: guha-rahul <52607971+guha-rahul@users.noreply.github.com>
Co-authored-by: Sukhman Singh <63765293+sukhman-sukh@users.noreply.github.com>
Co-authored-by: acul71 <34693171+acul71@users.noreply.github.com>
Co-authored-by: pacrob <5199899+pacrob@users.noreply.github.com>

libp2p/network/swarm.py

@@ -1,7 +1,4 @@
 import logging
-from typing import (
-    Optional,
-)
 
 from multiaddr import (
     Multiaddr,
@@ -75,7 +72,7 @@ class Swarm(Service, INetworkService):
     connections: dict[ID, INetConn]
     listeners: dict[str, IListener]
     common_stream_handler: StreamHandlerFn
-    listener_nursery: Optional[trio.Nursery]
+    listener_nursery: trio.Nursery | None
     event_listener_nursery_created: trio.Event
 
     notifees: list[INotifee]
@@ -340,7 +337,9 @@ class Swarm(Service, INetworkService):
             if hasattr(self, "transport") and self.transport is not None:
                 # Check if transport has close method before calling it
                 if hasattr(self.transport, "close"):
-                    await self.transport.close()
+                    await self.transport.close()  # type: ignore
+                # Ignoring the type above since `transport` may not have a close method
+                # and we have already checked it with hasattr
 
         logger.debug("swarm successfully closed")
 
@@ -360,7 +359,11 @@ class Swarm(Service, INetworkService):
         and start to monitor the connection for its new streams and
         disconnection.
         """
-        swarm_conn = SwarmConn(muxed_conn, self)
+        swarm_conn = SwarmConn(
+            muxed_conn,
+            self,
+        )
+
         self.manager.run_task(muxed_conn.start)
         await muxed_conn.event_started.wait()
         self.manager.run_task(swarm_conn.start)