the decorators are a 2.7+ thing that came out of unittest2. It is not available on 2.6 that is why the decorator is in the code not executed under < (2, 7).
A more transparent solution would be to make argcomplete dependent on unittest2 for < (2,7) in the setup.py and then do:
```
if sys.version_info >= (2, 7):
   import unittest
else:
   import unittest2 as unittest
```
Then you should be able to use the original unittest.skip(".....")