campaignmonitor/createsend-python — comment on commit 9a3188a5ebdf7bd8a4c489ce259e6bc8826a0f68
File: createsend/list.py line 47
By tobio:

As per the [documentation](http://www.campaignmonitor.com/api/lists/#updating_custom_field_options), the response will be empty. Any errors will be raised as exceptions.