.pth - howto?

[flippetigibbet]

I've just realized. I dropped a copy of my script in site-packages, in
order to get it working. When I remove that, I'm back to the orginal
problem.

If I add the pdb tracing in site.py, I reply 'r' as it enters each
function, then I try and import my module and ...
>>> import textfile
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: No module named textfile
(textfile is actually the name of the module, whereas I've been using
'dirname' upto now, in an effort to make things clearer, but probably
confusing things even more)