code: def retrieve_file_from_RCSB(http_connection, resource, silent = True):
      '''Retrieve a file from the RCSB.'''
      if not silent:
          colortext.printf("Retrieving %s from RCSB" % os.path.split(resource)[1], color = "aqua")
      return http_connection.get(resourcef retrieve_file_from_RCSB(http_connection, resource, silent = True):
      '''Retrieve a file from the RCSB.'''
      if not silent:
          colortext.printf("Retrieving %s from RCSB" % os.path.split(resource)[1], color = "aqua")
      return http_connection.get(resource)
docs: Retrieve a file from the RCSB.