BZ2

class numcodecs.bz2.BZ2(level=1)

Codec providing compression using bzip2 via the Python standard library.

Parameters:

levelint

Compression level.

codec_id: str | None = 'bz2'

Codec identifier.

encode(buf)

Encode data in buf.

Parameters:

bufbuffer-like

Data to be encoded. May be any object supporting the new-style buffer protocol.

Returns:

encbuffer-like

Encoded data. May be any object supporting the new-style buffer protocol.

decode(buf, out=None)

Decode data in buf.

Parameters:

bufbuffer-like

Encoded data. May be any object supporting the new-style buffer protocol.

outbuffer-like, optional

Writeable buffer to store decoded data. N.B. if provided, this buffer must be exactly the right size to store the decoded data.

Returns:

decbuffer-like

Decoded data. May be any object supporting the new-style buffer protocol.

get_config()

Return a dictionary holding configuration parameters for this codec. Must include an ‘id’ field with the codec identifier. All values must be compatible with JSON encoding.

classmethod from_config(config)

Instantiate codec from a configuration object.