python3-roslz4 1.14.3+ds1-11ubuntu3 (amd64 binary) in ubuntu focal

 This package is part of Robot OS (ROS). This is the Python
 implementation of the LZ4 streaming format. Large data streams are
 split into blocks which are compressed using the very fast LZ4
 compression algorithm.
 .
 This package contains the Python 3 library.