VER: Release 0.74.1

See release notes.

Author: nmacholl

CHANGELOG.md

@@ -1,5 +1,21 @@
 # Changelog
 
+## 0.74.1 - 2026-03-31
+
+#### Enhancements
+- Upgraded `databento-dbn` to 0.52.1:
+  - Added `__index__` to all int-representable and char-backed Python enums, enabling
+    use with `int()`, `hex()`, and as sequence indices
+  - Fixed memory leak in Python bindings where every record object leaked ~64 bytes
+    due to a `pyo3` 0.28 regression in `#[pyclass(dict)]` deallocation. Downgraded
+    `pyo3` to 0.27.2
+  - Removed unnecessary `dict` from `BidAskPair` and `ConsolidatedBidAskPair` Python
+    classes
+  - Fixed Python type stubs to reflect that `record_size()` is a method, not a property
+  - Fixed Python type stubs for record fields to indicate which fields are writable
+    (e.g. `publisher_id`, `instrument_id`, `price`, `size`) and added `@setter` stubs
+    for enum fields (e.g. `action`, `side`)
+
 ## 0.74.0 - 2026-03-24
 
 #### Enhancements

README.md

@@ -32,7 +32,7 @@ The library is fully compatible with distributions of Anaconda 2023.x and above.
 The minimum dependencies as found in the `pyproject.toml` are also listed below:
 - python = "^3.10"
 - aiohttp = "^3.8.3"
-- databento-dbn = "~0.52.0"
+- databento-dbn = "~0.52.1"
 - numpy = ">=1.23.5"
 - pandas = ">=1.5.3"
 - pip-system-certs = ">=4.0" (Windows only)

databento/common/publishers.py

@@ -81,7 +81,7 @@ class Venue(StringyMixin, str, Enum):
     XNDQ
         Nasdaq Options.
     XBXO
-        Nasdaq BX Options.
+        Nasdaq Texas Options.
     C2OX
         Cboe C2 Options.
     XPHL
@@ -474,7 +474,7 @@ def description(self) -> str:
         if self == Venue.XNDQ:
             return "Nasdaq Options"
         if self == Venue.XBXO:
-            return "Nasdaq BX Options"
+            return "Nasdaq Texas Options"
         if self == Venue.C2OX:
             return "Cboe C2 Options"
         if self == Venue.XPHL:
@@ -529,7 +529,7 @@ class Dataset(StringyMixin, str, Enum):
     XNAS_ITCH
         Nasdaq TotalView-ITCH.
     XBOS_ITCH
-        Nasdaq BX TotalView-ITCH.
+        Nasdaq Texas TotalView-ITCH.
     XPSX_ITCH
         Nasdaq PSX TotalView-ITCH.
     BATS_PITCH
@@ -838,7 +838,7 @@ def description(self) -> str:
         if self == Dataset.XNAS_ITCH:
             return "Nasdaq TotalView-ITCH"
         if self == Dataset.XBOS_ITCH:
-            return "Nasdaq BX TotalView-ITCH"
+            return "Nasdaq Texas TotalView-ITCH"
         if self == Dataset.XPSX_ITCH:
             return "Nasdaq PSX TotalView-ITCH"
         if self == Dataset.BATS_PITCH:
@@ -929,7 +929,7 @@ class Publisher(StringyMixin, str, Enum):
     XNAS_ITCH_XNAS
         Nasdaq TotalView-ITCH.
     XBOS_ITCH_XBOS
-        Nasdaq BX TotalView-ITCH.
+        Nasdaq Texas TotalView-ITCH.
     XPSX_ITCH_XPSX
         Nasdaq PSX TotalView-ITCH.
     BATS_PITCH_BATS
@@ -989,7 +989,7 @@ class Publisher(StringyMixin, str, Enum):
     OPRA_PILLAR_XNDQ
         OPRA - Nasdaq Options.
     OPRA_PILLAR_XBXO
-        OPRA - Nasdaq BX Options.
+        OPRA - Nasdaq Texas Options.
     OPRA_PILLAR_C2OX
         OPRA - Cboe C2 Options.
     OPRA_PILLAR_XPHL
@@ -1073,7 +1073,7 @@ class Publisher(StringyMixin, str, Enum):
     EQUS_ALL_EDGX
         Databento US Equities (All Feeds) - Cboe EDGX.
     EQUS_ALL_XBOS
-        Databento US Equities (All Feeds) - Nasdaq BX.
+        Databento US Equities (All Feeds) - Nasdaq Texas.
     EQUS_ALL_XPSX
         Databento US Equities (All Feeds) - Nasdaq PSX.
     EQUS_ALL_MEMX
@@ -1095,11 +1095,11 @@ class Publisher(StringyMixin, str, Enum):
     NDEX_IMPACT_XOFF
         ICE Endex - Off-Market Trades.
     XNAS_NLS_XBOS
-        Nasdaq NLS - Nasdaq BX.
+        Nasdaq NLS - Nasdaq Texas.
     XNAS_NLS_XPSX
         Nasdaq NLS - Nasdaq PSX.
     XNAS_BASIC_XBOS
-        Nasdaq Basic - Nasdaq BX.
+        Nasdaq Basic - Nasdaq Texas.
     XNAS_BASIC_XPSX
         Nasdaq Basic - Nasdaq PSX.
     EQUS_SUMMARY_EQUS
@@ -2142,7 +2142,7 @@ def description(self) -> str:
         if self == Publisher.XNAS_ITCH_XNAS:
             return "Nasdaq TotalView-ITCH"
         if self == Publisher.XBOS_ITCH_XBOS:
-            return "Nasdaq BX TotalView-ITCH"
+            return "Nasdaq Texas TotalView-ITCH"
         if self == Publisher.XPSX_ITCH_XPSX:
             return "Nasdaq PSX TotalView-ITCH"
         if self == Publisher.BATS_PITCH_BATS:
@@ -2202,7 +2202,7 @@ def description(self) -> str:
         if self == Publisher.OPRA_PILLAR_XNDQ:
             return "OPRA - Nasdaq Options"
         if self == Publisher.OPRA_PILLAR_XBXO:
-            return "OPRA - Nasdaq BX Options"
+            return "OPRA - Nasdaq Texas Options"
         if self == Publisher.OPRA_PILLAR_C2OX:
             return "OPRA - Cboe C2 Options"
         if self == Publisher.OPRA_PILLAR_XPHL:
@@ -2286,7 +2286,7 @@ def description(self) -> str:
         if self == Publisher.EQUS_ALL_EDGX:
             return "Databento US Equities (All Feeds) - Cboe EDGX"
         if self == Publisher.EQUS_ALL_XBOS:
-            return "Databento US Equities (All Feeds) - Nasdaq BX"
+            return "Databento US Equities (All Feeds) - Nasdaq Texas"
         if self == Publisher.EQUS_ALL_XPSX:
             return "Databento US Equities (All Feeds) - Nasdaq PSX"
         if self == Publisher.EQUS_ALL_MEMX:
@@ -2308,11 +2308,11 @@ def description(self) -> str:
         if self == Publisher.NDEX_IMPACT_XOFF:
             return "ICE Endex - Off-Market Trades"
         if self == Publisher.XNAS_NLS_XBOS:
-            return "Nasdaq NLS - Nasdaq BX"
+            return "Nasdaq NLS - Nasdaq Texas"
         if self == Publisher.XNAS_NLS_XPSX:
             return "Nasdaq NLS - Nasdaq PSX"
         if self == Publisher.XNAS_BASIC_XBOS:
-            return "Nasdaq Basic - Nasdaq BX"
+            return "Nasdaq Basic - Nasdaq Texas"
         if self == Publisher.XNAS_BASIC_XPSX:
             return "Nasdaq Basic - Nasdaq PSX"
         if self == Publisher.EQUS_SUMMARY_EQUS:

databento/version.py

@@ -1 +1 @@
-__version__ = "0.74.0"
+__version__ = "0.74.1"

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "databento"
-version = "0.74.0"
+version = "0.74.1"
 description = "Official Python client library for Databento"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -10,7 +10,7 @@ dynamic = [ "classifiers" ]
 dependencies = [
     "aiohttp>=3.8.3,<4.0.0; python_version < '3.12'",
     "aiohttp>=3.9.0,<4.0.0; python_version >= '3.12'",
-    "databento-dbn~=0.52.0",
+    "databento-dbn~=0.52.1",
     "numpy>=1.23.5; python_version < '3.12'",
     "numpy>=1.26.0; python_version >= '3.12'",
     "pandas>=1.5.3,<4.0.0",