[Yum] magic numbers

[Jay Smith]

What is the problem with my yum installation?
#python -V
Python 2.3.4
#rpm --version
RPM version 4.3.3
#rpm -q yum
yum-1.95-1
#yum check-update httpd
Traceback (most recent call last):
  File "/usr/bin/yum", line 22, in ?
    import yummain
ImportError: Bad magic number in /usr/lib/yum/yummain.pyc
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