feat: Test with Python 3.12 🐍

.github/workflows/test.yml

@@ -47,7 +47,7 @@ jobs:
       matrix:
         session: [tests]
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
         sqlalchemy: ["2.*"]
         include:
         - { session: tests,   python-version: "3.11", os: "ubuntu-latest", sqlalchemy: "1.*" }

noxfile.py

@@ -28,7 +28,7 @@
 COOKIECUTTER_REPLAY_FILES = list(Path("./e2e-tests/cookiecutters").glob("*.json"))
 
 package = "singer_sdk"
-python_versions = ["3.11", "3.10", "3.9", "3.8", "3.7"]
+python_versions = ["3.12", "3.11", "3.10", "3.9", "3.8", "3.7"]
 main_python_version = "3.11"
 locations = "singer_sdk", "tests", "noxfile.py", "docs/conf.py"
 nox.options.sessions = (
@@ -52,6 +52,13 @@
 ]
 
 
+def _clean_py312_deps(session: Session, dependencies: list[str]) -> None:
+    """Clean dependencies for Python 3.12."""
+    if session.python == "3.12":
+        dependencies.remove("duckdb")
+        dependencies.remove("duckdb-engine")
+
+
 @session(python=main_python_version)
 def mypy(session: Session) -> None:
     """Check types with mypy."""
@@ -77,6 +84,7 @@ def mypy(session: Session) -> None:
 @session(python=python_versions)
 def tests(session: Session) -> None:
     """Execute pytest tests and compute coverage."""
+    _clean_py312_deps(session, test_dependencies)
     session.install(".[s3,parquet]")
     session.install(*test_dependencies)
 
@@ -107,6 +115,7 @@ def tests(session: Session) -> None:
 @session(python=main_python_version)
 def benches(session: Session) -> None:
     """Run benchmarks."""
+    _clean_py312_deps(session, test_dependencies)
     session.install(".[s3]")
     session.install(*test_dependencies)
     sqlalchemy_version = os.environ.get("SQLALCHEMY_VERSION")
@@ -129,6 +138,7 @@ def update_snapshots(session: Session) -> None:
     """Update pytest snapshots."""
     args = session.posargs or ["-m", "snapshot"]
 
+    _clean_py312_deps(session, test_dependencies)
     session.install(".")
     session.install(*test_dependencies)
     session.run("pytest", "--snapshot-update", *args)

pyproject.toml

@@ -24,6 +24,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Software Development :: Libraries :: Application Frameworks",
     "Typing :: Typed",
@@ -55,7 +56,10 @@ jsonschema = [
 ]
 memoization = { version = ">=0.3.2,<0.5.0", python = "<4" }
 packaging = ">=23.1"
-pendulum = ">=2.1.0"
+pendulum = [
+    {version = ">=2.1.0,<3", python = "<3.8"},
+    {version = ">=2.1.0,<4", python = ">=3.8", allow-prereleases = true},
+]
 PyJWT = "~=2.4"
 python-dateutil = ">=2.8.2"
 python-dotenv = ">=0.20"
@@ -86,7 +90,8 @@ fs-s3fs = {version = ">=1.1.1", optional = true}
 # Parquet file dependencies installed as optional 'parquet' extras
 numpy = [
     { version = "<1.22", python = "<3.8", optional = true },
-    { version = ">=1.22", python = ">=3.8", optional = true },
+    { version = ">=1.22,<1.25", python = ">=3.8,<3.9", optional = true },
+    { version = ">=1.22", python = ">=3.9", optional = true },
 ]
 pyarrow = [
     { version = ">=11,<13", python = "<3.8", optional = true },
@@ -120,8 +125,11 @@ coverage = [
     {extras = ["toml"], version = ">=7.2,<7.3", python = "<3.8"},
     {extras = ["toml"], version = ">=7.2", python = ">=3.8"},
 ]
-duckdb = ">=0.8.0"
-duckdb-engine = ">=0.9.4"
+
+# TODO: Remove the Python 3.12 marker when DuckDB supports it
+duckdb = { version = ">=0.8.0", python = "<3.12" }
+duckdb-engine = { version = ">=0.9.4", python = "<3.12" }
+
 mypy = [
     { version = ">=1.0,<1.5", python = "<3.8" },
     { version = ">=1.0", python = ">=3.8" },

singer_sdk/authenticators.py

@@ -485,7 +485,7 @@ def is_token_valid(self) -> bool:
             return False
         if not self.expires_in:
             return True
-        return self.expires_in > (utc_now() - self.last_refreshed).total_seconds()  # type: ignore[no-any-return]
+        return self.expires_in > (utc_now() - self.last_refreshed).total_seconds()
 
     # Authentication and refresh
     def update_access_token(self) -> None:

tests/core/rest/test_pagination.py

@@ -27,7 +27,7 @@ def test_paginator_base_missing_implementation():
 
     with pytest.raises(
         TypeError,
-        match="Can't instantiate abstract class .* get_next",
+        match="Can't instantiate abstract class .* '?get_next'?",
     ):
         BaseAPIPaginator(0)
 
@@ -52,7 +52,7 @@ def test_paginator_page_number_missing_implementation():
 
     with pytest.raises(
         TypeError,
-        match="Can't instantiate abstract class .* has_more",
+        match="Can't instantiate abstract class .* '?has_more'?",
     ):
         BasePageNumberPaginator(1)
 
@@ -62,7 +62,7 @@ def test_paginator_offset_missing_implementation():
 
     with pytest.raises(
         TypeError,
-        match="Can't instantiate abstract class .* has_more",
+        match="Can't instantiate abstract class .* '?has_more'?",
     ):
         BaseOffsetPaginator(0, 100)
 
@@ -72,7 +72,7 @@ def test_paginator_hateoas_missing_implementation():
 
     with pytest.raises(
         TypeError,
-        match="Can't instantiate abstract class .* get_next_url",
+        match="Can't instantiate abstract class .* '?get_next_url'?",
     ):
         BaseHATEOASPaginator()
 

tests/core/test_connector_sql.py

@@ -1,12 +1,14 @@
 from __future__ import annotations
 
+import sys
 import typing as t
 from decimal import Decimal
 from unittest import mock
 
 import pytest
 import sqlalchemy
 from sqlalchemy.dialects import registry, sqlite
+from sqlalchemy.exc import NoSuchModuleError
 
 from singer_sdk.connectors import SQLConnector
 from singer_sdk.exceptions import ConfigValidationError
@@ -308,6 +310,11 @@ def get_column_alter_ddl(
         )
 
 
+@pytest.mark.xfail(
+    reason="DuckDB does not build on Python 3.12 yet",
+    condition=sys.version_info >= (3, 12),
+    raises=NoSuchModuleError,
+)
 class TestDuckDBConnector:
     @pytest.fixture
     def connector(self):