VER: Release 0.43.0

Author: threecgreen

.github/workflows/build.yaml

@@ -12,13 +12,13 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
     name: build - Python ${{ matrix.python-version }} (x86_64 ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Rust
         run: rustup toolchain add --profile minimal stable --component clippy,rustfmt
@@ -63,13 +63,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
     name: build - Python ${{ matrix.python-version }} (aarch64 linux)
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Rust
         run: rustup toolchain add --profile minimal stable --component clippy,rustfmt
@@ -110,13 +110,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
     name: build - Python ${{ matrix.python-version }} (macOS)
     runs-on: macos-latest
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Rust
         run: rustup toolchain add --profile minimal stable --component clippy,rustfmt

.github/workflows/release.yaml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 2
 
@@ -47,11 +47,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
     runs-on: macos-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Rust
         run: rustup toolchain add --profile minimal stable --component clippy,rustfmt
@@ -94,11 +94,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
     runs-on: windows-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Rust
         run: rustup toolchain add --profile minimal stable --component clippy,rustfmt
@@ -137,12 +137,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         target: [x86_64, aarch64]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Rust
         run: rustup toolchain add --profile minimal stable --component clippy,rustfmt
@@ -181,12 +181,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         target: [x86_64-unknown-linux-musl, aarch64-unknown-linux-musl]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Rust
         run: rustup toolchain add --profile minimal stable --component clippy,rustfmt
@@ -259,7 +259,7 @@ jobs:
       ]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Rust
         run: rustup toolchain add --profile minimal stable --component clippy,rustfmt
@@ -322,7 +322,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Set up Rust
       run: rustup toolchain add --profile minimal --target ${{ matrix.target }} stable
@@ -343,7 +343,7 @@ jobs:
     - name: Build release binary
       shell: bash
       run: |
-        cargo build --verbose --release dbn-cli ${{ env.TARGET_FLAGS }}
+        cargo build --verbose --release --bin dbn-cli ${{ env.TARGET_FLAGS }}
         if [ "${{ matrix.os }}" = "windows-latest" ]; then
           bin="target/${{ matrix.target }}/release/dbn.exe"
         else

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## 0.43.0 - 2025-10-22
+
+### Enhancements
+- Added export of `F_PUBLISHER_SPECIFIC` constant to Python
+- Removed support for Python 3.9 in `databento-dbn` due to end of life
+- Added explicit `Unset` variant for `SystemCode` and `ErrorCode`
+- Changed Python getters for enum fields to return the underlying type when no known
+  variant can be found. As a result, these getters no longer raise an exception
+- Added `Default` implementation for `SystemCode` and `ErrorCode`
+
+### Bug fixes
+- Added missing Python type stubs for other flag constants
+
 ## 0.42.0 - 2025-09-23
 
 ### Enhancements

Cargo.lock

@@ -11,7 +11,7 @@ resolver = "2"
 [workspace.package]
 authors = ["Databento <[email protected]>"]
 edition = "2021"
-version = "0.42.0"
+version = "0.43.0"
 documentation = "https://databento.com/docs"
 repository = "https://github.com/databento/dbn"
 license = "Apache-2.0"

Cargo.toml

@@ -1,7 +1,7 @@
 # databento-dbn
 
 [![build](https://github.com/databento/dbn/actions/workflows/build.yaml/badge.svg)](https://github.com/databento/dbn/actions/workflows/build.yaml)
-![python](https://img.shields.io/badge/python-3.9+-blue.svg)
+![python](https://img.shields.io/badge/python-3.10+-blue.svg)
 ![license](https://img.shields.io/github/license/databento/dbn?color=blue)
 [![pypi-version](https://img.shields.io/pypi/v/databento_dbn)](https://pypi.org/project/databento-dbn)
 

python/README.md

@@ -1,35 +1,36 @@
-[tool.poetry]
+[project]
 name = "databento-dbn"
-version = "0.42.0"
+version = "0.43.0"
 description = "Python bindings for encoding and decoding Databento Binary Encoding (DBN)"
-authors = ["Databento <[email protected]>"]
+readme = "README.md"
+requires-python = ">=3.10"
 license = "Apache-2.0"
+authors = [{ name = "Databento", email = "[email protected]" }]
+classifiers = [
+    "Programming Language :: Rust",
+    "Programming Language :: Python :: Implementation :: CPython",
+]
+dependencies = []
+
+[project.urls]
+Homepage = "https://databento.com"
+Documentation = "https://databento.com/docs"
+Repository = "https://github.com/databento/dbn"
+"Bug Tracker" = "https://github.com/databento/dbn/issues"
+
+[tool.poetry]
+requires-poetry = ">=2.0"
 
 [tool.poetry.dependencies]
-python = ">=3.9"
+python = ">=3.10,<3.14"
 
-[tool.poetry.dev-dependencies]
+[tool.poetry.group.dev.dependencies]
 maturin = ">=1.0"
 
 [build-system]
 requires = ["maturin>=1.0"]
 build-backend = "maturin"
 
-[project]
-name = "databento-dbn"
-version = "0.42.0"
-authors = [
-    { name = "Databento", email = "[email protected]" }
-]
-description = "Python bindings for encoding and decoding Databento Binary Encoding (DBN)"
-readme = "README.md"
-license = "Apache-2.0"
-requires-python = ">=3.9"
-classifiers = [
-    "Programming Language :: Rust",
-    "Programming Language :: Python :: Implementation :: CPython",
-]
-
 [tool.maturin]
 features = ["pyo3/extension-module"]
 python-source = "python"