The python*-egenix-mx* packages supersede the old python-mx* packages
found in earlier Debian versions.

A notable difference:

The modules (e.g. DateTime) now have the prefix "mx." in the
namespace.  So, for example, if you have used the old DateTime module
in a program, you should instead use mx.Datetime.  E.g.:

    # Old:
    import DateTime

    # New:
    from mx import DateTime