save mms from Android sms.xml

#!/usr/bin/env python3
# very crude but works ;-)
import bs4
import base64

bs4.BeautifulSoup(open('sms.xml'), 'lxml-xml')
parts=bs.findAll('part')
for part in parts:
    if part.parent.parent.findAll('addr', attrs={'address':'+48XXXXXXXXXX'}):
        if part.attrs['ct'] not in ('text/plain', 'application/smil'):
            open('extracted/{}'.format(part.attrs['cl']), 'wb').write(base64.decodestring(part.attrs['data'].encode('ascii')))