old_contents: """
  Utilities for downloading historical data in a given AOI.
  Python 3.5
  """
  
  import requests
  import io
  import zipfile
  import os
  from time import strftime
  
  import logging
  import yaml
  from model import aircraft_report
  
  logger = logging.getLogger(__name__)
  zip_dir = 'output'
  
  # TODO: dynamically calculate range of dates
  # current_date_stamp = strftime('%y-%m-%d')
  current_date_stamp = '2017-10-01'
  
  parent_dir = os.path.dirname(os.path.realpath(__file__))
  
  
  def get_config():
      with open(os.path.join(parent_dir, 'config.yml'), 'r') as yaml_config_file:
          return yaml.load(yaml_config_file)
  
  
  def get_and_load_archive_data_by_date(zip_url):
      # req = requests.get(zip_url)
      # res_zip = zipfile.ZipFile(io.BytesIO(req.content))
      # if not os.path.exists(zip_dir):
      #     os.makedirs(zip_dir)
      # res_zip.extractall(zip_dir)
  
      aircraft_report.get_aircraft_data_from_files(os.path.join(parent_dir, zip_dir))
  
  
  local_config = get_config()
  adsbe_download_base_url = local_config['adsbe_url']
  
  
  dl_url = adsbe_download_base_url + '{}.zip'.format(current_date_stamp)
  print(dl_url)
  get_and_load_archive_data_by_date(dl_url)
  
new_contents: """
  Utilities for downloading historical data in a given AOI.
  Python 3.5
  """
  
  import requests
  import io
  import zipfile
  import os
  import datetime
  import logging
  import yaml
  from model import aircraft_report
  
  logger = logging.getLogger(__name__)
  zip_dir = 'output'
  
  # TODO: dynamically calculate range of dates
  # current_date_stamp = strftime('%y-%m-%d')
  current_date_stamp = '2017-10-01'
  datestamp_format = '%Y-%m-%d'
  parent_dir = os.path.dirname(os.path.realpath(__file__))
  
  
  def get_config():
      with open(os.path.join(parent_dir, 'config.yml'), 'r') as yaml_config_file:
          return yaml.load(yaml_config_file)
  
  
  def get_and_load_archive_data_by_date(zip_url):
      # req = requests.get(zip_url)
      # res_zip = zipfile.ZipFile(io.BytesIO(req.content))
      # if not os.path.exists(zip_dir):
      #     os.makedirs(zip_dir)
      # res_zip.extractall(zip_dir)
  
      aircraft_report.get_aircraft_data_from_files(os.path.join(parent_dir, zip_dir))
  
  
  def get_list_of_datestamps_inclusive(start_date, end_date):
      datestamps_list = []
      start_datestamp = datetime.datetime.strptime(start_date, datestamp_format)
      end_datestamp = datetime.datetime.strptime(end_date, datestamp_format)
      step_size = datetime.timedelta(days=1)
      while start_datestamp <= end_datestamp:
          datestamps_list += start_datestamp
          start_datestamp += step_size
  
      return datestamps_list
  
  
  local_config = get_config()
  adsbe_download_base_url = local_config['adsbe_url']
  
  dl_url = adsbe_download_base_url + '{}.zip'.format(current_date_stamp)
  print(dl_url)
  get_and_load_archive_data_by_date(dl_url)
  
subject: Add range of timestamps to retrieve appropriate files to ingest within Area of Interestπ