Galaxy's sequence utilities are a set of Python modules for reading, analyzing, and converting sequence formats.
This package can be installed into any Galaxy with Tool Shed: https://toolshed.g2.bx.psu.edu/view/devteam/package_galaxy_utils_1_0
Galaxy package itself is being maintained at https://github.com/galaxyproject/tools-devteam/tree/master/packages/package_galaxy_utils_1_0