check for an item in the DHV Marketplace and get an email with the found items.
create a config file named conf.py with the following content
host = 'localhost'
port = 587
tls = True
username = ''
password = ''
sender = 'ABC <mymail>'
to = 'XYZ <mymail>'
simply call
./dhv_crawler.py 'item i am looking for'
result will be either: 'item ...' not found or an email will be sent using the given mail settings containing deteil about the discovered items.
simply use crontab for automation