b2sdk.transferer.transferer – Manager of downloaders

class b2sdk.transferer.transferer.Transferer(session, account_info)[source]

Bases: object

Handle complex actions around downloads and uploads to free raw_api from that responsibility.

DEFAULT_MAX_STREAMS = 8
DEFAULT_MIN_PART_SIZE = 104857600
MIN_CHUNK_SIZE = 8192
MAX_CHUNK_SIZE = 1048576
__init__(session, account_info)[source]
Parameters

  • max_streams – limit on a number of streams to use when downloading in multiple parts

  • min_part_size – the smallest part size for which a stream will be run when downloading in multiple parts

download_file_from_url(url, download_dest, progress_listener=None, range_=None)[source]
Parameters

  • url – url from which the file should be downloaded

  • download_dest – where to put the file when it is downloaded

  • progress_listener – where to notify about progress downloading

  • range – 2-element tuple containing data of http Range header