That is a good point, looking at the codebase I think that the go-to for
dealing with it is using the call to ".decode('utf8')".Thanks, Pawel On Mon, 16 Jan 2023 at 11:01, Richard Purdie < [email protected]> wrote: > On Thu, 2022-12-22 at 10:38 +0000, Pawel Zalewski wrote: > > The default return value from subprocess.check_output is an encoded byte. > > The applied fix will decode the value to a string. > > > > Signed-off-by: Pawel Zalewski <[email protected]> > > --- > > meta/classes/fs-uuid.bbclass | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/meta/classes/fs-uuid.bbclass b/meta/classes/fs-uuid.bbclass > > index 9b53dfba7a..731ea575bd 100644 > > --- a/meta/classes/fs-uuid.bbclass > > +++ b/meta/classes/fs-uuid.bbclass > > @@ -4,7 +4,7 @@ > > def get_rootfs_uuid(d): > > import subprocess > > rootfs = d.getVar('ROOTFS') > > - output = subprocess.check_output(['tune2fs', '-l', rootfs]) > > + output = subprocess.check_output(['tune2fs', '-l', rootfs], > text=True) > > for line in output.split('\n'): > > if line.startswith('Filesystem UUID:'): > > uuid = line.split()[-1] > > You mentioned running into this on kirkstone. One problem is that > text=True is python 3.7 syntax so whilst this is fine for master, > kirkstone supports older versions of python. > > Cheers, > > Richard >
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