yum and up2date broken after last update

[Manfred Schirmer]

After updating FC3 from fedora-devel repository yum got broken:

Traceback (most recent call last):
  File "/usr/bin/yum", line 6, in ?
    import yummain
  File "/usr/share/yum-cli/yummain.py", line 23, in ?
    import yum
  File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 21, in ?
    import rpm
ImportError: No module named rpm

Same with up2date:

Traceback (most recent call last):
  File "/usr/sbin/up2date", line 11, in ?
    import rpm
ImportError: No module named rpm

How can I add the missinig module 'rpm'?
-- 
Manfred Schirmer