cat-db doesn't work on some dbs

[examachine]

contents of database tmp/var/db/pisi/ii-description-en.bdb
a: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
also: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
and: {'repo-repo1': set(['zip', 'gnuconfig']), 'inst': set(['zip', 'gnuconfig'])}
archive: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
archives: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
archiving: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
by: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
called: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
compressed: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
compressing: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
compression: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
config: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
contains: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
directories: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
disk: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
distribution: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
enables: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
encryption: {'repo-repo1': set(['zip'])}
extract: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
file: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
files: {'repo-repo1': set(['unzip', 'zip', 'gnuconfig']), 'inst': set(['zip', 'gnuconfig'])}
for: {'repo-repo1': set(['unzip', 'zip']), 'inst': set(['zip'])}
format: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
from: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
gnu: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
gnuconfig: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
guess: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
in: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
info: {'repo-repo1': set(['zip'])}
is: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
of: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
or: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
packaging: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
pkzip: {'repo-repo1': set(['unzip'])}
saving: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
set: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
space: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
sub: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
support: {'repo-repo1': set(['zip'])}
temporarily: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
to: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
unused: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
unzip: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
unzipper: {'repo-repo1': set(['unzip'])}
updated: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
us: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
useful: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
utility: {'repo-repo1': set(['zip']), 'inst': set(['zip'])}
zip: {'repo-repo1': set(['unzip', 'zip']), 'inst': set(['unzip', 'zip'])}
zipfiles: {'repo-repo1': set(['unzip']), 'inst': set(['unzip'])}
contents of database tmp/var/db/pisi/ii-description-tr.bdb
GNU: {'repo-repo1': set(['gnuconfig']), 'inst': set(['gnuconfig'])}
Traceback (most recent call last):
File "scripts/cat-db.py", line 26, in
pisi.cli.printu(u'%s: %s\n' % (key, data))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 1: ordinal not in range(128)