Enable `--warn-redundant-casts` option in mypy (#14671)

* Enable `--warn-redundant-casts` option in mypy

Doesn't do much but helps me sleep better at night.

* Changelog

* Fix name of the ignore

* Fix one more missed cast

Not sure why I didn't see this one locally, maybe I needed a poetry update

* Remove old comment

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
This commit is contained in:
David Robertson 2022-12-12 21:25:07 +00:00 committed by GitHub
parent 7982891794
commit 3d87847ecc
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5 changed files with 7 additions and 6 deletions

1
changelog.d/14671.misc Normal file
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@ -0,0 +1 @@
Improve type hints.

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@ -12,6 +12,7 @@ local_partial_types = True
no_implicit_optional = True
disallow_untyped_defs = True
strict_equality = True
warn_redundant_casts = True
files =
docker/,

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@ -27,7 +27,7 @@ import time
import urllib.request
from os import path
from tempfile import TemporaryDirectory
from typing import Any, List, Optional, cast
from typing import Any, List, Optional
import attr
import click
@ -174,9 +174,7 @@ def _prepare() -> None:
click.get_current_context().abort()
# Switch to the release branch.
# Cast safety: parse() won't return a version.LegacyVersion from our
# version string format.
parsed_new_version = cast(version.Version, version.parse(new_version))
parsed_new_version = version.parse(new_version)
# We assume for debian changelogs that we only do RCs or full releases.
assert not parsed_new_version.is_devrelease

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@ -667,7 +667,8 @@ class DatabasePool:
)
# also check variables referenced in func's closure
if inspect.isfunction(func):
f = cast(types.FunctionType, func)
# Keep the cast for now---it helps PyCharm to understand what `func` is.
f = cast(types.FunctionType, func) # type: ignore[redundant-cast]
if f.__closure__:
for i, cell in enumerate(f.__closure__):
if inspect.isgenerator(cell.cell_contents):

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@ -77,7 +77,7 @@ class PostgresEngine(
# docs: The number is formed by converting the major, minor, and
# revision numbers into two-decimal-digit numbers and appending them
# together. For example, version 8.1.5 will be returned as 80105
self._version = cast(int, db_conn.server_version)
self._version = db_conn.server_version
allow_unsafe_locale = self.config.get("allow_unsafe_locale", False)
# Are we on a supported PostgreSQL version?