[Python-Dev] Re: RELEASED Python 2.3.1

[Guido van Rossum]

> The test driver (and ZODB) use buffered I/O, not unbuffered POSIX I/O.
> Assuring that writes done to buffered streams are visible to other processes
> is trickier than Martin's reliance on the write(2) man page, since write(2)
> isn't involved in the chain.

All you need to do is call f.flush().  This calls write(2) internally
(even on Windows).

--Guido van Rossum (home page: http://www.python.org/~guido/)