Question re threading and serial i/o

[Peter Hansen]

Frank Millman wrote:
> 
> I changed
>     p = file('/dev/ttyS0')
>     p.read(1)
> to
>     p = os.open('/dev/ttyS0',os.O_RDONLY|os.O_NONBLOCK)
>     os.read(p,1)
> and it behaved correctly.
> 
> Out of interest, is there another way to open a serial port in
> non-blocking mode?

I think you're supposed to use module "fcntl" after opening with
the standard builtin open() method, rather than having to resort
to os.open().  Don't know the details.

-Peter