fix: #1860 adjust realtime handoff import (#1861)

Author: mcbortolozzo

src/agents/realtime/handoffs.py

@@ -13,10 +13,10 @@
 from ..tracing.spans import SpanError
 from ..util import _error_tracing, _json
 from ..util._types import MaybeAwaitable
+from . import RealtimeAgent
 
 if TYPE_CHECKING:
     from ..agent import AgentBase
-    from . import RealtimeAgent
 
 
 # The handoff input type is the type of data passed when the agent is called via a handoff.

tests/realtime/test_realtime_handoffs.py

@@ -139,14 +139,6 @@ async def is_enabled(ctx, agent):
 
     h = realtime_handoff(rt, is_enabled=is_enabled)
 
-    # Patch missing symbol in module to satisfy isinstance in closure
-    import agents.realtime.handoffs as rh
-
-    if not hasattr(rh, "RealtimeAgent"):
-        from agents.realtime import RealtimeAgent as _RT
-
-        rh.RealtimeAgent = _RT  # type: ignore[attr-defined]
-
     from collections.abc import Awaitable
     from typing import cast as _cast