code: def find_organization(session, name):
      
      organization = session.query(Organization). \
          filter(Organization.name == name).first()
  
      return organization
docs: Find an organization.
  
      Find an organization by its `name` using the given `session`.
      When the organization does not exist the function will
      return `None`.
  
      :param session: database session
      :param name: name of the organization to find
  
      :returns: an organization object; `None` when the organization
          does not exist