VER: Release 0.74.0

See release notes.

Author: nmacholl

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## 0.74.0 - 2026-03-24
+
+#### Enhancements
+- Changed `SlowReaderBehavior.SKIP` to send "skip" instead of "drop" to the gateway
+- Upgraded `databento-dbn` to 0.52.0:
+  - Added `SYMBOL_CSTR_LEN` constant and versioned variants (`SYMBOL_CSTR_LEN_V1`,
+    `SYMBOL_CSTR_LEN_V2`, `SYMBOL_CSTR_LEN_V3`) to Python, including in each versioned
+    module (`v1`, `v2`, `v3`) as `SYMBOL_CSTR_LEN`
+  - Added `v1`, `v2`, and `v3` submodule imports to `databento_dbn.__init__` so they are
+    accessible as attributes (e.g. `databento_dbn.v1`)
+
 ## 0.73.0 - 2026-03-10
 
 #### 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 = "~0.51.0"
+- databento-dbn = "~0.52.0"
 - numpy = ">=1.23.5"
 - pandas = ">=1.5.3"
 - pip-system-certs = ">=4.0" (Windows only)
@@ -49,7 +49,7 @@ To install the latest stable version of the package from PyPI:
 The library needs to be configured with an API key from your account.
 [Sign up](https://databento.com/signup) for free and you will automatically
 receive a set of API keys to start with. Each API key is a 32-character
-string starting with `db-`, that can be found on the API Keys page of your [Databento user portal](https://databento.com/platform/keys).
+string starting with `db-`, that can be found on the API Keys page of your [Databento user portal](https://databento.com/portal/keys).
 
 A simple Databento application looks like this:
 

databento/live/gateway.py

@@ -124,11 +124,6 @@ class AuthenticationRequest(GatewayControl):
     slow_reader_behavior: SlowReaderBehavior | str | None = None
     client: str = USER_AGENT
 
-    def __post_init__(self) -> None:
-        # Temporary work around for LSG support
-        if self.slow_reader_behavior in [SlowReaderBehavior.SKIP, "skip"]:
-            self.slow_reader_behavior = "drop"
-
 
 @dataclasses.dataclass
 class SubscriptionRequest(GatewayControl):

databento/version.py

@@ -1 +1 @@
-__version__ = "0.73.0"
+__version__ = "0.74.0"

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "databento"
-version = "0.73.0"
+version = "0.74.0"
 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~=0.51.0",
+    "databento-dbn~=0.52.0",
     "numpy>=1.23.5; python_version < '3.12'",
     "numpy>=1.26.0; python_version >= '3.12'",
     "pandas>=1.5.3,<4.0.0",

tests/test_live_client.py

@@ -363,11 +363,7 @@ async def test_live_connect_auth_with_slow_reader_behavior(
     assert message.dataset == live_client.dataset
     assert message.encoding == Encoding.DBN
 
-    # Temporary handling of renamed variant
-    if slow_reader_behavior == SlowReaderBehavior.SKIP:
-        assert message.slow_reader_behavior == "drop"
-    else:
-        assert message.slow_reader_behavior == slow_reader_behavior
+    assert message.slow_reader_behavior == slow_reader_behavior
 
 
 async def test_live_connect_auth_two_clients(