Description of problem:
At the end of yum-complete-transaction the script aborts with a python syntax error


Version-Release number of selected component (if applicable):
rpm -q python yum
python-2.6-2.fc11.x86_64
yum-3.2.20-7.fc11.noarch


How reproducible:
Every time

Steps to Reproduce:
1. Intrrupt a yum transaction
2. Run 'yum-complete-transaction'
3. wait for transaction to complete
  
Actual results:
Cleaning up completed transaction file
Traceback (most recent call last):
  File "/usr/sbin/yum-complete-transaction", line 208, in <module>
    util = YumCompleteTransaction()
  File "/usr/sbin/yum-complete-transaction", line 115, in __init__
    self.main()
  File "/usr/sbin/yum-complete-transaction", line 189, in main
    self.clean_up_ts_files(timestamp, self.conf.persistdir)
  File "/usr/sbin/yum-complete-transaction", line 123, in clean_up_ts_files
    if os.path.exists(f):
NameError: global name 'os' is not defined


Expected results:
yum-complete-tranaction should complete

Additional info: