b2sdk._internal.stream.wrapper StreamWrapper

class b2sdk._internal.stream.wrapper.StreamWrapper(stream)

Bases: IOBase

Wrapper for a file-like object.

__init__(stream)

Parameters:

stream – the stream to read from or write to

seekable()

Return whether object supports random access.

If False, seek(), tell() and truncate() will raise OSError. This method may need to do a test seek().

seek(pos, whence=0)

Seek to a given position in the stream.

Parameters:

pos (int) – position in the stream

Returns:

new absolute position

Return type:

int

tell()

Return current stream position.

Return type:

int

truncate(size=None)

Truncate file to size bytes.

File pointer is left unchanged. Size defaults to the current IO position as reported by tell(). Return the new size.

flush()

Flush the stream.

readable()

Return whether object was opened for reading.

If False, read() will raise OSError.

read(size=None)

Read data from the stream.

Parameters:

size (int) – number of bytes to read

Returns:

data read from the stream

writable()

Return whether object was opened for writing.

If False, write() will raise OSError.

write(data)

Write data to the stream.

Parameters:

data – a data to write to the stream

class b2sdk._internal.stream.wrapper.StreamWithLengthWrapper(stream, length=None)

Bases: StreamWrapper

Wrapper for a file-like object that supports __len__ interface

__init__(stream, length=None)

Parameters:

• stream – the stream to read from or write to

• length (int) – length of the stream