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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def parse(data, datafile):
 """Read the Adventure data file and return a ``Data`` object."""

    data._last_travel = [0, [0]]  # x and verbs used by section 3

    while True:
        section_number = int(datafile.readline())
        if not section_number:  # no further sections
            break
        store = globals().get('section%d' % section_number)
        while True:
            fields = [ (int(field) if field.lstrip('-').isdigit() else field)
                       for field in datafile.readline().strip().split('\t') ]
            if fields[0] == -1:  # end-of-section marker
                break
            store(data, *fields)

    del data._last_travel  # state used by section 3
    del data._object       # state used by section 5

    data.object_list = sorted(set(data.objects.values()), key=attrgetter('n'))
    #data.room_list = sorted(set(data.rooms.values()), key=attrgetter('n'))
    for obj in data.object_list:
        name = obj.names[0]
        if hasattr(data, name):
            name = name + '2'  # create identifiers like ROD2, PLANT2
        setattr(data, name, obj)

    return data