'generator ignored GeneratorExit''

[Charles Hixson]

If I run the following code in the same module, it works correctly, but 
if I import it I get the message:
Exception RuntimeError: 'generator ignored GeneratorExit' in <generator 
object getNxtFile at 0x7f932f884f50> ignored

def getNxtFile (startDir, exts = ["txt", "utf8"]):
     try:
         for    path    in    getNxtPath (startDir, exts):
             try:
                 fil    =    open (path, encoding = "utf-8-sig")
                 yield    fil
             except:
                 print ("Could not read:  ", path)
     except    GeneratorExit:
         raise    StopIteration

The message appears to be purely informational, but I *would* like to 
fix whatever problem it's reporting, and none of the changes that I've 
tried have worked.  What *should* I be doing?

-- 
Charles Hixson