docs: def getUserPassword(host='www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca'):
      """"Getting the username/password for host from .netrc filie """
      if os.access(os.path.join(os.environ.get('HOME','/'),".netrc"),os.R_OK):
          auth=netrc.netrc().authenticators(host)
      else:
          auth=False
      if not auth:
          sys.stdout.write("CADC Username: ")
          username=sys.stdin.readline().strip('\n')
          password=getpass.getpass().strip('\n')
      else:
          username=auth[0]
          password=auth[2]
      return (username,password)