idle problem after make python from source on RH6.1

[root]

    I'm trying to "make" python from source I retrieved from the
python.org site (Python 1.5.2) and run into a problem following the
build process.  When I try to run idle 0.5 it complains trying to import
"InteractiveInterpreter" from module code.  Looking at the
"code.py" module that was installed with the normal RH6.1 python install
from rpm, I see the class "InteractiveInterpreter" is there.  However,
when I look at "code.py" after the build process, "code.py" doesn't have
the "InteractiveInterpreter" class anywhere in it.  My reason for going
through this exercise is so that I can install the MySQL module.
Can someone help?  Never having done this before, I'm not sure if it's
something I'm doing or whether the tarball is "bad?"  I've also tried
installing the source from the RH6.1 cd, but it won't install and when I
do a check signature on it, one of the three files fails.  The output
looks like this:
python-1.5.2-7    size    OK
python-1.5.2-7    md5    OK
python-1.5.2-7    unknown    unknown signature test failed.

Thanks in advance for any help.