"flush" your files before forking. For me, this program gives the correct output 'hello\n' when correct=1. When correct=0, I get either 'hello\nhello' or 'hellohello\n' as output.
------------------------------------------------------------------------
correct = 0
import sys, os
sys.stdout.write('hello')
if correct: sys.stdout.flush()
if os.fork() == 0: sys.stdout.write('\n')
------------------------------------------------------------------------
Jeff
pgpDFwCkshuhD.pgp
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