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Message-ID: <602cf3ba-7d42-4c3f-a672-573f19b946fb@linuxfoundation.org>
Date: Mon, 5 Aug 2024 16:07:56 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: Alessandro Zanni <alessandro.zanni87@...il.com>, shuah@...nel.org,
 gregkh@...uxfoundation.org, nfraprado@...labora.com
Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
 Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v2] kselftest/devices/probe: Fix SyntaxWarning in regex
 strings for Python 3

On 8/5/24 04:37, Alessandro Zanni wrote:
> Insert raw strings to prevent Python3 from interpreting string literals as Unicode strings
> and, consequently, '\d' as an invalid escaped sequence.
> Avoid the 'SyntaxWarning: invalid escape sequence '\d'' warning for Python versions greater than 3.6.
> 

Change log lines shouldn't exceed 76 chars - Refer the to following doc

Documentation/process/submitting-patches.rst

Include the exact warning you are seeing when you run the script.

> Fixes: dacf1d7a78bf ("kselftest: Add test to verify probe of devices from discoverable buses")
> 
> Reviewed-by: NĂ­colas F. R. A. Prado <nfraprado@...labora.com>
> Signed-off-by: Alessandro Zanni <alessandro.zanni87@...il.com>
> ---
> 
> Notes:
>      v2: Imperative mode description for the inserted changes, added previous commit tag fixed by this patch
> 
>   .../selftests/devices/probe/test_discoverable_devices.py      | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/devices/probe/test_discoverable_devices.py b/tools/testing/selftests/devices/probe/test_discoverable_devices.py
> index d94a74b8a054..d7a2bb91c807 100755
> --- a/tools/testing/selftests/devices/probe/test_discoverable_devices.py
> +++ b/tools/testing/selftests/devices/probe/test_discoverable_devices.py
> @@ -45,7 +45,7 @@ def find_pci_controller_dirs():
>   
>   
>   def find_usb_controller_dirs():
> -    usb_controller_sysfs_dir = "usb[\d]+"
> +    usb_controller_sysfs_dir = r"usb[\d]+"
>   
>       dir_regex = re.compile(usb_controller_sysfs_dir)
>       for d in os.scandir(sysfs_usb_devices):
> @@ -91,7 +91,7 @@ def get_acpi_uid(sysfs_dev_dir):
>   
>   
>   def get_usb_version(sysfs_dev_dir):
> -    re_usb_version = re.compile("PRODUCT=.*/(\d)/.*")
> +    re_usb_version = re.compile(r"PRODUCT=.*/(\d)/.*")
>       with open(os.path.join(sysfs_dev_dir, "uevent")) as f:
>           return int(re_usb_version.search(f.read()).group(1))
>   

thanks,
-- Shuah

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