pythagora.agents.Buyer - Buyers are the primary agents in network models of marketplaces. Buyers keep track of their purchase history, their currently assigned item, and their intention on the next iteration of the market.pythagora.agents.Seller - Undocumentedpythagora.groups.Community - A Community is a group of buyers.pythagora.groups.CommunitySet - A CommunitySet is a group of communities.pythagora.logger.Logger - Logger objects track market states throughout experiments for future analysis.