Multi-threaded printing and IOErrors in Windows

[Tim Peters]

[David Bolen]
> ...
> If that were the case, doing some test prints in your code of very
> long strings (the C buffer is probably anywhere from 2-8K) should
> be able to reproduce the problem more reliably.

stderr and stdout both "blow up" eventually on Windows is they're not
attached to something usable.  Here's a little Python program:

"""
import sys
i = 0
while 1:
    sys.stdout.write('x')
    i += 1
    f = open('count.txt', 'w')
    print >> f, 'wrote', i, 'bytes'
    f.flush()
    f.close()
"""

If I run that from a console with pythonw.exe, it soon dies, and count.txt
is left containing "wrote 4096 bytes".  Same thing if I use sys.stderr.