Require Python 3.12

Sphinx and various other packages
have started dropping support
for Python 3.10, so require
Python 3.12 and upgrade the source
code to use Python 3.12 features
where possible.

The most noticeable change for OWS
is that the override decorator is
part of typing, and the UTC alias
declared in datetime.

Author: pjonsson

.github/workflows/lint.yml

@@ -34,7 +34,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11"]
+        python-version: ["3.12"]
         lintcommand:
           - "pylint -j 2 datacube_ows --disable=C,R,W,E1136"
           - "ruff check --output-format=github"

datacube_ows/config_utils.py

@@ -12,12 +12,11 @@
 from collections.abc import Callable, Sequence
 from importlib import import_module
 from itertools import chain
-from typing import Any, TypeAlias, cast
+from typing import Any, TypeAlias, cast, override
 from urllib.parse import urlparse
 
 import fsspec
 from datacube.utils.masking import make_mask
-from typing_extensions import override
 
 from datacube_ows.config_toolkit import deepinherit
 

datacube_ows/index/postgis/api.py

@@ -7,15 +7,14 @@
 
 import datetime
 from threading import Lock
-from typing import Any, Literal
+from typing import Any, Literal, override
 
 import click
 from antimeridian import fix_shape
 from datacube.drivers.common_psql import as_role
 from datacube.model import Range
 from odc.geo import CRS, Geometry
 from sqlalchemy import text
-from typing_extensions import override
 
 from datacube_ows.index.api import (
     AbortRun,

datacube_ows/index/postgres/api.py

@@ -6,12 +6,11 @@
 from __future__ import annotations
 
 from threading import Lock
-from typing import Literal, cast
+from typing import Literal, cast, override
 
 import click
 from datacube.drivers.common_psql import as_role
 from sqlalchemy import text
-from typing_extensions import override
 
 from datacube_ows.index.api import (
     InsufficientDbPrivileges,

datacube_ows/loading.py

@@ -8,13 +8,12 @@
 import logging
 from collections import OrderedDict
 from collections.abc import Iterable
-from typing import cast
+from typing import cast, override
 from uuid import UUID
 
 import datacube
 import numpy
 import xarray
-from typing_extensions import override
 
 from datacube_ows.ogc_exceptions import WMSException
 from datacube_ows.startup_utils.creds import CredentialManager

datacube_ows/ogc_exceptions.py

@@ -6,10 +6,10 @@
 from __future__ import annotations
 
 import traceback as tb
+from typing import override
 
 from ows.common.types import OWSException, Version
 from ows.common.v20.encoders import xml_encode_exception_report
-from typing_extensions import override
 
 from datacube_ows.http_utils import resp_headers
 

datacube_ows/ows_configuration.py

@@ -23,7 +23,7 @@
 from collections.abc import Mapping
 from enum import Enum
 from threading import Lock
-from typing import Any, cast
+from typing import Any, cast, override
 
 import numpy
 from datacube import Datacube
@@ -32,7 +32,6 @@
 from ows import Version
 from slugify import slugify
 from sqlalchemy.exc import OperationalError
-from typing_extensions import override
 
 from datacube_ows.config_utils import (
     ConfigException,

datacube_ows/startup_utils/__init__.py

@@ -9,7 +9,7 @@
 import os
 import sys
 from time import monotonic
-from typing import Any, TypeVar
+from typing import Any
 
 from flask import Flask, g, request
 from sqlalchemy.exc import OperationalError
@@ -40,10 +40,9 @@ def initialise_logger(name: str | None = None) -> Logger:
     return log
 
 
-SentryEvent = TypeVar("SentryEvent")
-
-
-def before_send(event: SentryEvent, hint: dict[str, Any]) -> SentryEvent | None:
+def before_send[SentryEvent](
+    event: SentryEvent, hint: dict[str, Any]
+) -> SentryEvent | None:
     if "exc_info" in hint:
         _, exc_value, _ = hint["exc_info"]
         if isinstance(

datacube_ows/styles/base.py

@@ -8,11 +8,10 @@
 import io
 import logging
 from threading import Lock
-from typing import Any, cast
+from typing import Any, cast, override
 
 import numpy as np
 import xarray as xr
-from typing_extensions import override
 
 from datacube_ows.config_utils import (
     AbstractMaskRule,

datacube_ows/styles/colormap.py

@@ -7,12 +7,11 @@
 
 import logging
 from datetime import datetime
-from typing import cast
+from typing import cast, override
 
 import numpy
 import xarray
 from datacube.utils.masking import make_mask
-from typing_extensions import override
 from xarray import DataArray, Dataset
 
 from datacube_ows.config_utils import (