FIX: Fix blocking on iteration __del__

Author: nmacholl

CHANGELOG.md

@@ -8,6 +8,9 @@
 - Added export of `TradingEvent` enum from `databento_dbn` to the root `databento` package
 - Removed upper bound for supported `python` versions; the constraint is now `^3.9`
 
+#### Bug fixes
+- Fixed an issue where sending a `KeyboardInterrupt` during iteration of the `Live` client could block execution waiting for the connection to close
+
 ## 0.47.0 - 2024-12-17
 
 #### Enhancements

databento/live/client.py

@@ -116,7 +116,7 @@ def __init__(
 
     def __del__(self) -> None:
         try:
-            self.stop()
+            self.terminate()
         except (AttributeError, ValueError):
             pass
 
@@ -644,10 +644,11 @@ def __iter__(self) -> LiveIterator:
         return self
 
     def __del__(self) -> None:
-        if self.client.is_connected():
-            self.client.stop()
-            self.client.block_for_close()
+        try:
+            self.client.terminate()
             logger.debug("iteration aborted")
+        except ValueError:
+            pass
 
     async def __anext__(self) -> DBNRecord:
         if not self._dbn_queue.is_enabled():