Re: [PATCH] vmstate-static-checker: Fix for current python

[Cleber Rosa <crosa@redhat.com>]

----- Original Message -----
> From: "Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>
> To: qemu-devel@nongnu.org, quintela@redhat.com, ehabkost@redhat.com, crosa@redhat.com
> Sent: Thursday, November 21, 2019 1:53:03 PM
> Subject: [PATCH] vmstate-static-checker: Fix for current python
> 
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> 
> Python 3.7.5 on f31 doesn't seem to like the old type=file syntax
> on argparse.
> 
> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> ---
>  scripts/vmstate-static-checker.py | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/scripts/vmstate-static-checker.py
> b/scripts/vmstate-static-checker.py
> index 21dbdccf3e..9f912dd870 100755
> --- a/scripts/vmstate-static-checker.py
> +++ b/scripts/vmstate-static-checker.py
> @@ -379,9 +379,11 @@ def main():
>      help_text = "Parse JSON-formatted vmstate dumps from QEMU in files SRC
>      and DEST.  Checks whether migration from SRC to DEST QEMU versions
>      would break based on the VMSTATE information contained within the JSON
>      outputs.  The JSON output is created from a QEMU invocation with the
>      -dump-vmstate parameter and a filename argument to it.  Other
>      parameters to QEMU do not matter, except the -M (machine type)
>      parameter."
>  
>      parser = argparse.ArgumentParser(description=help_text)
> -    parser.add_argument('-s', '--src', type=file, required=True,
> +    parser.add_argument('-s', '--src', type=argparse.FileType('r'),
> +                        required=True,

Actually, as far back as Python 3.4 (maybe even earlier) `file` is not a
valid built-in function anymore.

>                          help='json dump from src qemu')
> -    parser.add_argument('-d', '--dest', type=file, required=True,
> +    parser.add_argument('-d', '--dest', type=argparse.FileType('r'),
> +                        required=True,
>                          help='json dump from dest qemu')
>      parser.add_argument('--reverse', required=False, default=False,
>                          action='store_true',
> --
> 2.23.0
> 
> 
> 

And I agree that this is 4.2 material.

Reviewed-by: Cleber Rosa <crosa@redhat.com>