We should like the IDLE shell to give the same results as the standard shell. See #7163
On 3.2.2 on Win7, the problem is worse: sys.stdout.write(100) crashes IDLE -- as in it just fades away after a short (1/2 sec?) delay.
sys.stdout.write(sys)
gives me the error reported.
The difference comes from this in the Command Window:
>>> sys.stdout
<_io.TextIOWrapper name='<stdout>' mode='w' encoding='cp437'>
versus this in IDLE:
>>> import sys
>>> sys.stdout
<idlelib.rpc.RPCProxy object at 0x00000000031D0208>