old_contents: import argparse
  import subprocess as sp
  import os
  """
  Script for downloading the data sets from Kaggle
  
  Usage:
  
      python download_data.py
  
  Run
  
      python download_data.py --help
  
  for help on the usage of command line arguments
  
  Note: Kaggle requires a user to accept the rules of a competition
  before they can download any data. So, downloading the data sets
  from commandline requires Kaggle user specific data. Make sure
  that DATA_DIRECTORY contains a "cookies.txt" from
  "https:www.kaggle.com". You can get a copy of your cookies using
  an extension like this:
  
      "https://chrome.google.com/webstore/detail/cookiestxt/njabckikapfpffapmjgojcnbfjonfjfg?hl=en"
  
  """
  
  COOKIES = 'cookies.txt'
  TRAIN = 'train.csv'
  TEST = 'test.csv'
  
  
  def download(url, directory, cookie):
      curl_bin = [
          'curl',
          '-L',
          '--cookie', cookie,
          '-o', directory,
          url
      ]
      sp.run(curl_bin)
  
  
  def get_dataset(source, directory):
      train_path = os.path.join(directory, TRAIN)
      if os.path.exists(train_path):
          print('%s already exists' % train_path)
      else:
          url = os.path.join(source, TRAIN)
          print('downloading %s ...' % url)
          download(url, train_path, os.path.join(directory, COOKIES))
          print('done')
  
      test_path = os.path.join(directory, TEST)
      if os.path.exists(test_path):
          print('%s already exists' % test_path)
      else:
          url = os.path.join(source, TEST)
          print('downloading %s ...' % url)
          download(url, test_path, os.path.join(directory, COOKIES))
          print('done')
  
  if __name__ == '__main__':
      parser = argparse.ArgumentParser()
      parser.add_argument('-D', '--data_directory',
                          default='./data/',
                          help='directory to download the data sets')
      parser.add_argument('-L', '--source_url',
                          default='https://www.kaggle.com/c/digit-recognizer/download/',
                          help='url to the data sets')
      args = parser.parse_args()
      get_dataset(args.source_url, args.data_directory)
  
new_contents: import argparse
  import subprocess as sp
  import os
  """
  Script for downloading the data sets from Kaggle
  
  Usage:
  
      python download_data.py
  
  Run
  
      python download_data.py --help
  
  for help on the usage of command line arguments
  
  Note: Kaggle requires a user to accept the rules of a competition
  before they can download any data. So, downloading the data sets
  from commandline requires Kaggle user specific data. Make sure
  that DATA_DIRECTORY contains a "cookies.txt" from
  "https:www.kaggle.com". You can get a copy of your cookies using
  an extension like this:
  
      "https://chrome.google.com/webstore/detail/cookiestxt/njabckikapfpffapmjgojcnbfjonfjfg?hl=en"
  
  """
  
  COOKIES = 'cookies.txt'
  TRAIN = 'train.csv'
  TEST = 'test.csv'
  
  
  def download(url, directory, cookie):
      curl_bin = [
          'curl',
          '-L',
          '--cookie', cookie,
          '-o', directory,
          url
      ]
      sp.run(curl_bin)
  
  
  def get_dataset(source, directory):
      train_path = os.path.join(directory, TRAIN)
      if os.path.exists(train_path):
          print('%s already exists' % train_path)
      else:
          url = os.path.join(source, TRAIN)
          print('downloading %s ...' % url)
          download(url, train_path, os.path.join(directory, COOKIES))
          print('done')
  
      test_path = os.path.join(directory, TEST)
      if os.path.exists(test_path):
          print('%s already exists' % test_path)
      else:
          url = os.path.join(source, TEST)
          print('downloading %s ...' % url)
          download(url, test_path, os.path.join(directory, COOKIES))
          print('done')
  
  if __name__ == '__main__':
      parser = argparse.ArgumentParser()
      parser.add_argument('-L', '--source_url',
                          default='https://www.kaggle.com/c/digit-recognizer/download/',
                          help='url to the data sets')
      parser.add_argument('-D', '--data_directory',
                          default='./data/',
                          help='directory to download the data sets')
      args = parser.parse_args()
      get_dataset(args.source_url, args.data_directory)
  
subject: Add script for downloading data sets