Hi!
I know that it is not the best way to do it, but I prefer to extract a table and read it in pandas:
import pandas as pd
qza = 'beta-group-sign-pairwise.qzv'
a = !unzip $qza
digest = a[1].split('/')[0].replace(' inflating: ','')
meta = pd.read_csv(digest+'/data/raw_data.tsv', sep='\t')
!rm -r $digest
It is working for .qzv and .qza files