File Creation Not Working In A Thread Class?

[bc90021]

Hi All,

Thanks in advance for any and all help!

I have this code:

g = open(fileName, 'a')

where fileName is defined before the line it's used in.  It works fine 
when I use it outside a thread class.

When I put the same line in a thread class, it no longer works, and I get 
an error:

IOError: [Errno 2] no such file u'fileName'

Are threads not allowed to create files?