code: def fetch(url, dest, force=False):
      
  
      cached = True
      if force or not os.path.exists(dest):
          cached = False
          r = requests.get(url, stream=True)
          if r.status_code == 200:
              with open(dest, 'wb') as f:
                  for chunk in r.iter_content(1024):
                      f.write(chunk)
      return cached, dest
docs: Retrieve data from an url and store it into dest.
  
      Parameters
      ----------
      url: str
          Link to the remote data
      dest: str
          Path where the file must be stored
      force: bool (default=False)
          Overwrite if the file exists
  
      Returns
      -------
      cached: bool
          True if the file already exists
      dest: str
          The same string of the parameter