dimod.serialization.fileview.FileView

class FileView(bqm, version=(1, 0))

A seekable, readable view into a binary quadratic model.

Parameters:bqm (BQM) – The binary quadratic model.

Note

Currently the BQM is not locked while the file view is open, in the future this will change.

__init__(bqm, version=(1, 0))

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(bqm[, version])	Initialize self.
close()	Close the file view.
fileno	Returns underlying file descriptor if one exists.
flush	Flush write buffers, if applicable.
isatty	Return whether this is an ‘interactive’ stream.
read
readable()	Return whether object was opened for reading.
readall	Read until EOF, using multiple read() call.
readinto(buff)	Read bytes into a pre-allocated, writable bytes-like object.
readinto1(buff)	Read bytes into a pre-allocated, writable bytes-like object.
readline	Read and return a line from the stream.
readlines	Return a list of lines from the stream.
seek(offset[, whence])	Change the stream position to the given offset.
seekable()	Return whether object supports random access.
tell	Return current stream position.
truncate	Truncate file to size bytes.
writable	Return whether object was opened for writing.
write
writelines

Attributes

SEEK_LINEAR
SEEK_OFFSET
SEEK_QUADRATIC
closed
header	The header associated with the BQM.
header_end	The location (in bytes) that the header ends.
linear_end	The location (in bytes) that the linear data end.
linear_start	The location (in bytes) that the linear data starts.
neighborhood_starts	The indices of the neighborhood starts.
offset_end
offset_start	The location (in bytes) that the offset starts.
quadratic_end	The location (in bytes) that the quadratic data end.
quadratic_start	The location (in bytes) that the quadratic data starts.
variables_end
variables_section	The variables section as bytes.
variables_start