[Yum] Replace python arch

[Clodoaldo Pinto]

In a FC3 machine I have python.i386 installed and I want to replace it
with python.i686. The versions are the same:

# yum list python
...
Installed Packages
python.i386                              2.3.4-13.1             installed
Available Packages
python.i686                              2.3.4-13.1             custom-updates


As you can see from the yum output above I have already built the i686
package and placed it in a yum repository.

If I try to update:

# yum update python*
...
Examining python-2.3.4-13.1.i686.rpm: python - 2.3.4-13.1.i686
Examining python-debuginfo-2.3.4-13.1.i686.rpm: python-debuginfo -
2.3.4-13.1.i686
Examining python-devel-2.3.4-13.1.i686.rpm: python-devel - 2.3.4-13.1.i686
Examining python-docs-2.3.4-13.1.i686.rpm: python-docs - 2.3.4-13.1.i686
Examining python-tools-2.3.4-13.1.i686.rpm: python-tools - 2.3.4-13.1.i686
python-2.3.4-13.1.i686.rpm: does not update installed package.
python-debuginfo-2.3.4-13.1.i686.rpm: does not update installed package.
python-devel-2.3.4-13.1.i686.rpm: does not update installed package.
python-docs-2.3.4-13.1.i686.rpm: does not update installed package.
python-tools-2.3.4-13.1.i686.rpm: does not update installed package.
No Packages marked for Update/Obsoletion

# yum --version
2.2.2

What is the best way to achieve it?

Regards, Clodoaldo Pinto