[Python-Dev] Can't have unbuffered text I/O in Python 3.0?

Antoine Pitrou solipsis at pitrou.net
Fri Dec 19 23:47:27 CET 2008


> Well, ``python -h`` still lists it.

Precisely, it says:

-u     : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x
         see man page for details on internal buffering relating to '-u'

Note the "binary". And indeed:

./python -u
Python 3.1a0 (py3k:67839M, Dec 18 2008, 17:56:54) 
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.stdout.buffer.write(b"y")
y1
>>> 

I don't know what it would take to enable unbuffered text IO while keeping the
current TextIOWrapper implementation...

Regards

Antoine.




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