tensorbay.utility.file

mixin classes for local file and remote file.

class tensorbay.utility.file.FileMixin(local_path)[source]

FileMixin is a mixin class to mixin file related methods for local file.

get_checksum()[source]

Get and cache the sha1 checksum of the local data.

Return the url of the local data file.

Return the binary file pointer of this file.

The local file pointer will be obtained by build-in open().

class tensorbay.utility.file.RemoteFileMixin(remote_path, *, _url_getter=None, _url_updater=None, cache_path='')[source]

RemoteFileMixin is a mixin class to mixin file related methods for remote file.

Parameters

local_path – The file local path.
_url_getter (Optional[Callable[[str], str]]) – The url getter of the remote file.
cache_path (str) – The path to store the cache.
remote_path (str) –
_url_updater (Optional[Callable[[], None]]) –

Return type

None

update_url()[source]

Update the url when the url is timed out.

Return the url of the data hosted by tensorbay.

Return the binary file pointer of this file.

The remote file pointer will be obtained by urllib.request.urlopen().