Drop support for Python 3.8

Python 3.8 has reached its end-of-life: https://peps.python.org/pep-0569/

CHANGELOG.md

@@ -20,6 +20,10 @@
 
 * Exit with status 0 upon keyboard interrupt.
 
+### Removed
+
+* Python 3.8 is no longer supported.
+
 ## pg\_activity 3.5.1 - 2024-04-03
 
 ### Fixed

pgactivity/activities.py

@@ -3,13 +3,13 @@
 import builtins
 import os
 import time
+from collections.abc import Sequence
 from typing import TypeVar
 from warnings import catch_warnings, simplefilter
 
 import attr
 import psutil
 
-from .compat import Sequence
 from .types import (
     BlockingProcess,
     IOCounter,

pgactivity/cli.py

@@ -47,14 +47,13 @@ def configure_logger(debug_file: str | None = None) -> StringIO:
 
 def flag(p: Any, spec: str, *, dest: str, feature: str) -> None:
     assert not spec.startswith("--no-") and spec.startswith("--"), spec
-    if sys.version_info < (3, 9):
-        spec = f"--no-{spec[2:]}"
-        action = "store_false"
-        help = f"Disable {feature}."
-    else:
-        action = argparse.BooleanOptionalAction
-        help = f"Enable/disable {feature}."
-    p.add_argument(spec, dest=dest, help=help, action=action, default=None)
+    p.add_argument(
+        spec,
+        dest=dest,
+        help=f"Enable/disable {feature}.",
+        action=argparse.BooleanOptionalAction,
+        default=None,
+    )
 
 
 def get_parser() -> argparse.ArgumentParser:

pgactivity/compat.py

@@ -1,59 +1,13 @@
 from __future__ import annotations
 
-import importlib.resources
 import operator
-import sys
 from importlib.metadata import version
 from typing import Any
 
 import attr
 import attr.validators
 import blessed
 
-__all__ = [
-    "Callable",
-    "Dict",
-    "Iterable",
-    "Iterator",
-    "Mapping",
-    "MutableSet",
-    "Sequence",
-]
-
-if sys.version_info >= (3, 9):
-    from collections.abc import (
-        Callable,
-        Iterable,
-        Iterator,
-        Mapping,
-        MutableSet,
-        Sequence,
-    )
-
-    Dict = dict
-else:
-    from typing import Callable, Dict, Iterable, Iterator, Mapping, MutableSet, Sequence
-
-if sys.version_info >= (3, 9):
-
-    def read_resource(pkgname: str, dirname: str, *args: str) -> str | None:
-        resource = importlib.resources.files(pkgname).joinpath(dirname)
-        for arg in args:
-            resource = resource.joinpath(arg)
-        if resource.is_file():
-            return resource.read_text()
-        return None
-
-else:
-
-    def read_resource(pkgname: str, dirname: str, *args: str) -> str | None:
-        with importlib.resources.path(pkgname, dirname) as dirp:
-            f = dirp.joinpath(*args)
-            if f.is_file():
-                return f.read_text()
-            return None
-
-
 ATTR_VERSION = tuple(int(x) for x in version("attrs").split(".", 2)[:2])
 BLESSED_VERSION = tuple(int(x) for x in version("blessed").split(".", 2)[:2])
 

pgactivity/config.py

@@ -2,6 +2,7 @@
 
 import configparser
 import enum
+import importlib.resources
 import io
 import os
 from collections.abc import ItemsView
@@ -11,7 +12,16 @@
 import attr
 from attr import validators
 
-from .compat import gt, read_resource
+from .compat import gt
+
+
+def read_resource(pkgname: str, dirname: str, *args: str) -> str | None:
+    resource = importlib.resources.files(pkgname).joinpath(dirname)
+    for arg in args:
+        resource = resource.joinpath(arg)
+    if resource.is_file():
+        return resource.read_text()
+    return None
 
 
 class ConfigurationError(Exception):

pgactivity/pg.py

@@ -2,10 +2,9 @@
 
 import logging
 import os
+from collections.abc import Callable, Sequence
 from typing import Any, TypeVar, overload
 
-from .compat import Callable, Dict, Sequence
-
 Row = TypeVar("Row")
 
 try:
@@ -29,7 +28,7 @@
 
     __version__ = psycopg.__version__
 
-    Connection = psycopg.Connection[Dict[str, Any]]
+    Connection = psycopg.Connection[dict[str, Any]]
 
     class BytesLoader(Loader):
         def load(self, data: Buffer) -> bytes:

pgactivity/queries/__init__.py

@@ -4,7 +4,7 @@
 here = pathlib.Path(__file__).parent
 
 
-@functools.lru_cache(maxsize=None)
+@functools.cache
 def get(name: str) -> str:
     path = here / f"{name}.sql"
     with path.open() as f:

pgactivity/types.py

@@ -2,16 +2,16 @@
 
 import enum
 import functools
+from collections.abc import Callable, Iterable, Iterator, Mapping, MutableSet, Sequence
 from datetime import timedelta
 from ipaddress import IPv4Address, IPv6Address
-from typing import Any, Tuple, TypeVar, Union, overload
+from typing import Any, TypeVar, Union, overload
 
 import attr
 import psutil
 from attr import validators
 
 from . import colors, compat, pg, utils
-from .compat import Callable, Iterable, Iterator, Mapping, MutableSet, Sequence
 from .config import Configuration, Flag, HeaderSection, UISection
 
 
@@ -1186,7 +1186,7 @@ def copy_focused_query_to_clipboard(self) -> str:
 ActivityStats = Union[
     Iterable[WaitingProcess],
     Iterable[RunningProcess],
-    Tuple[Iterable[WaitingProcess], SystemInfo],
-    Tuple[Iterable[BlockingProcess], SystemInfo],
-    Tuple[Iterable[LocalRunningProcess], SystemInfo],
+    tuple[Iterable[WaitingProcess], SystemInfo],
+    tuple[Iterable[BlockingProcess], SystemInfo],
+    tuple[Iterable[LocalRunningProcess], SystemInfo],
 ]

pgactivity/ui.py

@@ -3,7 +3,7 @@
 import time
 from argparse import Namespace
 from functools import partial
-from typing import List, cast
+from typing import cast
 
 import attr
 from blessed import Terminal
@@ -216,7 +216,7 @@ def main(
                         if is_local:
                             # TODO: Use this logic in waiting and blocking cases.
                             local_pg_procs, io_read, io_write = activities.ps_complete(
-                                cast(List[types.RunningProcess], pg_procs.items),
+                                cast(list[types.RunningProcess], pg_procs.items),
                                 sys_procs,
                                 fs_blocksize,
                             )

pgactivity/utils.py

@@ -4,8 +4,9 @@
 import functools
 import re
 import sys
+from collections.abc import Iterable, Mapping
 from datetime import datetime, timedelta, timezone
-from typing import IO, Any, Iterable, Mapping
+from typing import IO, Any
 
 import attr
 import humanize

pgactivity/views.py

@@ -3,14 +3,15 @@
 import functools
 import inspect
 import itertools
+from collections.abc import Callable, Iterable, Iterator, Sequence
 from textwrap import TextWrapper, dedent
 from typing import Any, Literal
 
 from blessed import Terminal
 
 from . import colors, utils
 from .activities import sorted as sorted_processes
-from .compat import Callable, Iterable, Iterator, Sequence, link
+from .compat import link
 from .keys import BINDINGS, EXIT_KEY
 from .keys import HELP as HELP_KEY
 from .keys import (

pyproject.toml

@@ -8,7 +8,7 @@ dynamic = ["version"]
 description = "Command line tool for PostgreSQL server activity monitoring."
 readme = "README.md"
 license = { text = "PostgreSQL" }
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 authors = [
     { name = "Julien Tachoires", email = "[email protected]" },
     { name = "Benoit Lobréau", email = "[email protected]" },