BLD: Add support for Python 3.13

Author: nmacholl

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     name: build - Python ${{ matrix.python-version }} (${{ matrix.os }})
     runs-on: ${{ matrix.os }}
 

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## 0.45.0 - TBD
+
+This release adds support for Python v3.13.
+
+#### Enhancements
+- Added support for Python 3.13
+
 ## 0.44.1 - 2024-10-29
 
 #### Enhancements

pyproject.toml

@@ -27,7 +27,7 @@ repository = "https://github.com/databento/databento-python"
 "Bug Tracker" = "https://github.com/databento/databento-python/issues"
 
 [tool.poetry.dependencies]
-python = ">=3.9,<3.13"
+python = ">=3.9,<3.14"
 aiohttp = [
     {version = "^3.8.3", python = "<3.12"},
     {version = "^3.9.0", python = "^3.12"}

tests/mockliveserver/controller.py

@@ -94,7 +94,12 @@ def _command_active_count(self, *_: str) -> None:
         """
         Log the number of active connections.
         """
-        count = self._server._active_count  # type: ignore [attr-defined]
+        # _active_count was removed in Python 3.13
+        if hasattr(self._server, "_active_count"):
+            count = self._server._active_count
+        else:
+            count = len(self._server._clients)  # type: ignore [attr-defined]
+
         logger.info("active connections: %d", count)
 
     def _command_add_key(self, key: str) -> None: