Unbuffered stdout/auto-flush

[Yang Zhang]

Hi, is there any way to get unbuffered stdout/stderr without relying on
the -u flag to python or calling .flush() on each print (including
indirect hacks like replacing sys.stdout with a wrapper that succeeds
each write() with a flush())? Thanks in advance!
--
Yang Zhang

http://www.mit.edu/~y_z/

[s0suk3@gmail.com]

Re: Unbuffered stdout/auto-flush

On Jun 21, 12:29 pm, Yang Zhang <yanghates...@g mail.comwrote:

Hi, is there any way to get unbuffered stdout/stderr without relying on
the -u flag to python or calling .flush() on each print (including
indirect hacks like replacing sys.stdout with a wrapper that succeeds
each write() with a flush())? Thanks in advance!
>

I think the only way is to reopen the stdout file descriptor:

import sys
import os

# reopen stdout file descriptor with write mode
# and 0 as the buffer size (unbuffered)
sys.stdout = os.fdopen(sys.s tdout.fileno(), 'w', 0)

print "unbuffered text"

Sebastian