[Tutor] Fwd: question about lists

[Ismar Sehic]

hello, good people.
i have a pretty urgent question.the situation is like this, i have
following lists, as results of numerous psycopg2 queries, here are two
examples :
 for one hotel, id 3628 :

3628
 [36L, 317L]  - room type id
['DBP', 'DS5']  - room names
[Decimal('10.00'), Decimal('17.00'), Decimal('15.00'),
Decimal('20.00'), Decimal('22.00'), Decimal('19.00'),
Decimal('23.00'), Decimal('30.00'), Decimal('25.40'),
Decimal('33.50'), Decimal('40.50')] - all available prices

['LOW', 'MID', 'HIGH'] - season names

[datetime.date(2014, 5, 1), datetime.date(2014, 6, 21),
datetime.date(2014, 7, 16), datetime.date(2014, 8, 21),
datetime.date(2014, 9, 13)] - season start datetimes,      |
 [datetime.date(2014, 6, 20), datetime.date(2014, 7, 15),
datetime.date(2014, 8, 20), datetime.date(2014, 9, 12),
datetime.date(2014, 9, 30)] -season end datetimes      |     ------->
the two datetimes lists correspond to each other in such a manner that
first datetime from season starts shoud be in pair with first datetime
in season ends
[0, 1, 2, 3] - ---> these are numbers of persons per occupancy
 ['BB', 'HB']  ---> these are occupancy types (bed and breakfast, half board)

second hotel id, 3588, second lists:

3588
[52L, 302L, 303L, 108L, 106L, 316L, 319L, 188L, 37L, 240L]
['AP2', 'DB3', 'DB4', 'DBO', 'DBS', 'DS4', 'DS7', 'FAM', 'SNG', 'ST2']
[Decimal('30.00'), Decimal('33.00'), Decimal('20.00'),
Decimal('45.00'), Decimal('48.00'), Decimal('58.00'),
Decimal('61.00'), Decimal('72.00'), Decimal('76.00'),
Decimal('29.00'), Decimal('40.00'), Decimal('43.00'),
Decimal('54.00'), Decimal('57.00'), Decimal('65.00'),
Decimal('69.00'), Decimal('37.00'), Decimal('39.00'),
Decimal('56.00'), Decimal('60.00'), Decimal('87.00'),
Decimal('91.00'), Decimal('127.00'), Decimal('135.00'),
Decimal('31.00'), Decimal('41.50'), Decimal('44.00'),
Decimal('66.00'), Decimal('70.00'), Decimal('32.00'),
Decimal('47.00'), Decimal('74.00'), Decimal('41.00'),
Decimal('93.00'), Decimal('98.00'), Decimal('138.00'),
Decimal('144.00'), Decimal('137.00'), Decimal('34.00'),
Decimal('35.00'), Decimal('49.00'), Decimal('50.00'),
Decimal('62.00'), Decimal('64.00'), Decimal('78.00'),
Decimal('42.00'), Decimal('55.00'), Decimal('68.00')]

['LOW', 'MID 1', 'MID 2', 'HIGH']
[datetime.date(2014, 4, 17), datetime.date(2014, 5, 1),
datetime.date(2014, 5, 21), datetime.date(2014, 5, 23),
datetime.date(2014, 6, 11), datetime.date(2014, 6, 13),
datetime.date(2014, 7, 4), datetime.date(2014, 7, 9),
datetime.date(2014, 8, 27), datetime.date(2014, 8, 30),
datetime.date(2014, 9, 10), datetime.date(2014, 9, 12),
datetime.date(2014, 9, 26)]

[datetime.date(2014, 5, 22), datetime.date(2014, 5, 20),
datetime.date(2014, 6, 10), datetime.date(2014, 6, 12),
datetime.date(2014, 7, 8), datetime.date(2014, 7, 3),
datetime.date(2014, 8, 29), datetime.date(2014, 8, 26),
datetime.date(2014, 9, 9), datetime.date(2014, 9, 11),
datetime.date(2014, 9, 30), datetime.date(2014, 9, 25),
datetime.date(2014, 10, 15)]
[1, 2, 3, 4, 0]
 ['AI']

the point is, i need to make relations between lists in one hotel id
range, so prices are arranged by every season start and end dates, so
one price, two datetimes, also i need to take in consideration - i
only need prices which have equal differences between seasons, and use
them further in my code, while prices that do not match that equation
are used with list that carries the number of occupancies, and also
shoud be used further in my calculations.seasons names list is there
to give me a clue how to arrange the dates.

my final result should be an xml file, that carries all the values in
this format :
for hotel id 3628, notice that the difference between the prices is 7,
that's what i mean when i say i have to take the prices that have
equal difference per seasons.
<Supplements>
            <Supplement>
              <Board Code="BB" Start="2014-05-01" End="2014-09-30">
                <Adults>
                  <Adult MinAge="" MaxAge="" Price="0" PersonPosition="">
                    <!--PersonPosition only used if price per adult
number is set-->
                  </Adult>
                </Adults>
                <Children>
                  <Child MinAge="2" MaxAge="11" Price="0" PersonPosition="" />
                </Children>
              </Board>
            </Supplement>
            <Supplement>
              <Board Code="HB" Start="2014-05-01" End="2014-09-30">
                <Adults>
                  <Adult MinAge="" MaxAge="" Price="7" PersonPosition="">
                    <!--PersonPosition only used if price per adult
number is set-->
                  </Adult>
                </Adults>
                <Children>
                  <Child MinAge="2" MaxAge="11" Price="3,5" PersonPosition="" />
                </Children>

the lists above are just for adult prices, i have to do the same thing
for children, once i get this done.

so please, i need some pointers in how to get these lists related,
regarding i cannot use indexing, because i don't always have the same
number of items in list.
thanks for any of your help.i'm still a beginner, would be great to
learn new tricks about lists.