def get_billable_traffic(campaign):
 (start, end) = promote.get_traffic_dates(campaign)
 return get_promo_traffic(campaign, start, end)

def get_billable_traffic ( campaign ) : ( start , end ) = promote . get_traffic_dates ( campaign ) return get_promo_traffic ( campaign , start , end )
get traffic for dates when promocampaign is active .