tuples

	dates_list = ['2011-05-01','2011-05-02','2011-05-03']
	count_list = ['100','200','300']
        dates_count_tuple = {}
        for i in range(len(dates_list)):
            dates_count_tuple[thisdate[i]] = count_list[i]

	#i want  a tuple in the format
	['2011-05-01':'100', '2011-05-02':'200', '2011-05-03':'300']