Logged In: YES 
user_id=13298

FWIW, another data point, Python 2.4., Linux 2.6.9, Fedora
Core 3:

$ python2.4 t.py < /usr/src/linux/README
Traceback (most recent call last):
  File "t.py", line 3, in ?
    os.read(0, -1)
OSError: [Errno 22] Invalid argument
$ python2.4 t.py < /dev/zero
Traceback (most recent call last):
  File "t.py", line 3, in ?
    os.read(0, -1)
OSError: [Errno 14] Bad address
$ python2.4 t.py < /dev/urandom
Segmentation fault

Interesting.