import os
import logging
from bugzilla import Bugzilla
from bugzilla.exceptions import BugzillaError
from requests.exceptions import RequestException

URL = os.getenv("URL", "https://bugzilla.suse.coma")
USER = os.getenv("USER", "test")
API_KEY = "MYAPIKEY"

try:
    client = Bugzilla(URL, force_rest=True, user=USER, api_key=API_KEY)
except (BugzillaError, RequestException) as exc:
    error = exc
    logging.error("%s", exc)

$ python3 test.py 
ERROR:root:HTTPSConnectionPool(host='bugzilla.suse.coma', port=443): Max retries exceeded with url: /rest/version?Bugzilla_api_key=MYAPIKEY (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7f54f87912b0>: Failed to establish a new connection: [Errno -2] Name or service not known',))

python3 test.py 
ERROR:root:HTTPSConnectionPool(host='bugzilla.suse.coma', port=443): Max retries exceeded with url: /rest/version?Bugzilla_api_key= (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7f395ab9a8d0>: Failed to establish a new connection: [Errno -2] Name or service not known',))

$ ./setup.py pylint
running pylint
running pycodestyle
running pylint

$ pytest --rw-functional
[...]
=== 86 passed in 236.10s (0:03:56) ===