Using base_vendor.py and base_cms.py

Each CMS and vendor object can reference each other with self.vendor and self.cms respectively. The purpose of using a generic CMS object is it will determine the appropriate CMS for each vendor and choose that. This allows for easier/cleaner code in the execution.

Example:

cms_object = CMS(vendor).cms
vendor_object = Vendor(vendor)
cms_object.vendor = vendor_object
vendor_object.cms = cms_object