  The Python package ComCH is a lightweight specialized computer algebra system
that provides models for well known objects, the surjection and Barratt-Eccles
operads, parameterizing the product structure of algebras that are commutative
in a derived sense. The primary examples of such algebras treated by ComCH are
the cochain complexes of spaces, for which it provides effective constructions
of Steenrod cohomology operations at all prime.
