convert ping events into a dataclasses

src/h2/connection.py

@@ -1823,17 +1823,16 @@ def _receive_ping_frame(self, frame: PingFrame) -> tuple[list[Frame], list[Event
 
         evt: PingReceived | PingAckReceived
         if "ACK" in frame.flags:
-            evt = PingAckReceived()
+            evt = PingAckReceived(ping_data=frame.opaque_data)
         else:
-            evt = PingReceived()
+            evt = PingReceived(ping_data=frame.opaque_data)
 
             # automatically ACK the PING with the same 'opaque data'
             f = PingFrame(0)
             f.flags.add("ACK")
             f.opaque_data = frame.opaque_data
             frames.append(f)
 
-        evt.ping_data = frame.opaque_data
         events.append(evt)
 
         return frames, events

src/h2/events.py

@@ -403,6 +403,7 @@ def __repr__(self) -> str:
         )
 
 
+@dataclass(**kw_only)
 class PingReceived(Event):
     """
     The PingReceived event is fired whenever a PING is received. It contains
@@ -412,14 +413,14 @@ class PingReceived(Event):
     .. versionadded:: 3.1.0
     """
 
-    def __init__(self) -> None:
-        #: The data included on the ping.
-        self.ping_data: bytes | None = None
+    ping_data: bytes
+    """The data included on the ping."""
 
     def __repr__(self) -> str:
         return f"<PingReceived ping_data:{_bytes_representation(self.ping_data)}>"
 
 
+@dataclass(**kw_only)
 class PingAckReceived(Event):
     """
     The PingAckReceived event is fired whenever a PING acknowledgment is
@@ -432,9 +433,8 @@ class PingAckReceived(Event):
        Removed deprecated but equivalent ``PingAcknowledged``.
     """
 
-    def __init__(self) -> None:
-        #: The data included on the ping.
-        self.ping_data: bytes | None = None
+    ping_data: bytes
+    """The data included on the ping."""
 
     def __repr__(self) -> str:
         return f"<PingAckReceived ping_data:{_bytes_representation(self.ping_data)}>"

tests/test_events.py

@@ -222,17 +222,15 @@ def test_pingreceived_repr(self) -> None:
         """
         PingReceived has a useful debug representation.
         """
-        e = h2.events.PingReceived()
-        e.ping_data = b"abcdefgh"
+        e = h2.events.PingReceived(ping_data=b"abcdefgh")
 
         assert repr(e) == "<PingReceived ping_data:6162636465666768>"
 
     def test_pingackreceived_repr(self) -> None:
         """
         PingAckReceived has a useful debug representation.
         """
-        e = h2.events.PingAckReceived()
-        e.ping_data = b"abcdefgh"
+        e = h2.events.PingAckReceived(ping_data=b"abcdefgh")
 
         assert repr(e) == "<PingAckReceived ping_data:6162636465666768>"