List new e-mails from IMAP mailbox ordered by spamscore

mailbox.py

#!/usr/bin/env python
import imaplib,getpass
import email
import email.header
import email.utils
import re
def decodestr(str1):
    str2,enc=email.header.decode_header(str1)[0]
    if enc:
        return str2.decode(enc)
    else:
        return str2

hetz=imaplib.IMAP4('mail.hetzner.de')
hetz.login('user@domain.de', getpass.getpass())
hetz.select('INBOX',1)
typ, data = hetz.search(None, '(OR (RECENT) (UNSEEN))')
msgs=[]
if typ == 'OK':
    for num in data[0].split():
        typ, data = hetz.fetch(num, '(BODY[HEADER])')
        obj=email.message_from_string(data[0][1])
        spamscore=float(re.search('([-+]?[0-9]*\.?[0-9]+)',\
                obj.get('X-Spam-Score','0')).group())
        msgs.append((obj,num,spamscore))
    msgs.sort(key=lambda tpl: tpl[2])
    for obj,num,spamscore in msgs[::-1]:
        date=email.utils.parsedate_tz(obj.get('Date'))
        if date:
            datestr = '%04d-%02d-%02d %02d:%02d:%02d' % date[0:6]
        else:
            datestr ='?'
        print '%4s %5.1f' % (num,spamscore), datestr, obj.get('From')[0:48]
        if spamscore < 10:
            print decodestr(obj.get('Subject'))[0:78]
hetz.close()
hetz.logout()