'Constructor.'

def __init__(self):

    super(Packager, self).__init__()
    self.tmpdir = ''
    self.in_memory = False
    self.workbook = None
    self.worksheet_count = 0
    self.chartsheet_count = 0
    self.chart_count = 0
    self.drawing_count = 0
    self.table_count = 0
    self.num_vml_files = 0
    self.num_comment_files = 0
    self.named_ranges = []
    self.filenames = []
