linux-kernel - Re: [PATCH v2 1/3] kunit: tool: add subscripts for type annotations where appropriate

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Date:   Fri, 17 Mar 2023 13:45:43 +0800
From:   David Gow <davidgow@...gle.com>
To:     Daniel Latypov <dlatypov@...gle.com>
Cc:     brendanhiggins@...gle.com, rmoar@...gle.com,
        linux-kernel@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kselftest@...r.kernel.org, skhan@...uxfoundation.org,
        johannes@...solutions.net, Johannes Berg <johannes.berg@...el.com>
Subject: Re: [PATCH v2 1/3] kunit: tool: add subscripts for type annotations
 where appropriate

On Fri, 17 Mar 2023 at 06:06, Daniel Latypov <dlatypov@...gle.com> wrote:
>
> E.g. for subprocess.Popen, it can be opened in `text=True` mode where it
> returns strings, or `text=False` where it returns bytes.
> To differentiate, you can annotate types as `Popen[str]` or
> `Popen[bytes]`.
>
> This patch should add subscripts in all the places we were missing them.
>
> Reported-by: Johannes Berg <johannes.berg@...el.com>
> Link: https://lore.kernel.org/linux-kselftest/20230315105055.9b2be0153625.I7a2cb99b95dff216c0feed4604255275e0b156a7@changeid/
> Signed-off-by: Daniel Latypov <dlatypov@...gle.com>
> ---
> Note: this is unchanged, just added a 3rd patch to this series.
> ---

Looks good.

Reviewed-by: David Gow <davidgow@...gle.com>

Thanks, Johannes and Daniel!

-- David

>  tools/testing/kunit/kunit_kernel.py  | 6 +++---
>  tools/testing/kunit/kunit_printer.py | 2 +-
>  tools/testing/kunit/run_checks.py    | 2 +-
>  3 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
> index 53e90c335834..e6fc8fcb071a 100644
> --- a/tools/testing/kunit/kunit_kernel.py
> +++ b/tools/testing/kunit/kunit_kernel.py
> @@ -92,7 +92,7 @@ class LinuxSourceTreeOperations:
>                 if stderr:  # likely only due to build warnings
>                         print(stderr.decode())
>
> -       def start(self, params: List[str], build_dir: str) -> subprocess.Popen:
> +       def start(self, params: List[str], build_dir: str) -> subprocess.Popen[str]:
>                 raise RuntimeError('not implemented!')
>
>
> @@ -112,7 +112,7 @@ class LinuxSourceTreeOperationsQemu(LinuxSourceTreeOperations):
>                 kconfig.merge_in_entries(base_kunitconfig)
>                 return kconfig
>
> -       def start(self, params: List[str], build_dir: str) -> subprocess.Popen:
> +       def start(self, params: List[str], build_dir: str) -> subprocess.Popen[str]:
>                 kernel_path = os.path.join(build_dir, self._kernel_path)
>                 qemu_command = ['qemu-system-' + self._qemu_arch,
>                                 '-nodefaults',
> @@ -141,7 +141,7 @@ class LinuxSourceTreeOperationsUml(LinuxSourceTreeOperations):
>                 kconfig.merge_in_entries(base_kunitconfig)
>                 return kconfig
>
> -       def start(self, params: List[str], build_dir: str) -> subprocess.Popen:
> +       def start(self, params: List[str], build_dir: str) -> subprocess.Popen[str]:
>                 """Runs the Linux UML binary. Must be named 'linux'."""
>                 linux_bin = os.path.join(build_dir, 'linux')
>                 params.extend(['mem=1G', 'console=tty', 'kunit_shutdown=halt'])
> diff --git a/tools/testing/kunit/kunit_printer.py b/tools/testing/kunit/kunit_printer.py
> index 5f1cc55ecdf5..015adf87dc2c 100644
> --- a/tools/testing/kunit/kunit_printer.py
> +++ b/tools/testing/kunit/kunit_printer.py
> @@ -15,7 +15,7 @@ _RESET = '\033[0;0m'
>  class Printer:
>         """Wraps a file object, providing utilities for coloring output, etc."""
>
> -       def __init__(self, output: typing.IO):
> +       def __init__(self, output: typing.IO[str]):
>                 self._output = output
>                 self._use_color = output.isatty()
>
> diff --git a/tools/testing/kunit/run_checks.py b/tools/testing/kunit/run_checks.py
> index 066e6f938f6d..61cece1684df 100755
> --- a/tools/testing/kunit/run_checks.py
> +++ b/tools/testing/kunit/run_checks.py
> @@ -37,7 +37,7 @@ def main(argv: Sequence[str]) -> None:
>         if argv:
>                 raise RuntimeError('This script takes no arguments')
>
> -       future_to_name: Dict[futures.Future, str] = {}
> +       future_to_name: Dict[futures.Future[None], str] = {}
>         executor = futures.ThreadPoolExecutor(max_workers=len(commands))
>         for name, argv in commands.items():
>                 if name in necessary_deps and shutil.which(necessary_deps[name]) is None:
>
> base-commit: 2c6a96dad5797e57b4cf04101d6c8d5c7a571603
> --
> 2.40.0.rc1.284.g88254d51c5-goog
>

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