The mkhowto utility, which pychart uses to generate its documentation, is not included with the Fedora python binary packages. As a workaround for pychart, I'm including the Doc/ directory from the Python src as an additional tarball, but this should be in either python-tools or python-docs somewhere.
*** Bug 177350 has been marked as a duplicate of this bug. ***
PyX needs the mkhowto script as well; currently it's working around this by shipping the preformatted documentation, but this is suboptimal because it's not kept versioned upstream.
mkhowto is in the python-tools subpackage and seems to have been for a while