On Oct 7, 8:13 pm, Luis Zarrabeitia <[EMAIL PROTECTED]> wrote: > On Tuesday 07 October 2008 05:33:18 pm George Sakkis wrote: > > > Not an answer to your actual question, but you can keep the 'for' loop > > instead of rewriting it with 'while' using the iter(function, > > sentinel) idiom: > > > for line in iter(sys.stdin.readline, ""): > > print "You said!", line > > You're right, it's not an answer to my actual question, but I had completely > forgotten about the 'sentinel' idiom. Many thanks... I was trying to do it > with 'itertools', obviously with no luck. > > The question still stands (how to turn off the buffering), but this is a nice > workaround until it gets answered.
The closest answer I found comes from the docs (http://docs.python.org/ library/stdtypes.html#file-objects): """ In order to make a for loop the most efficient way of looping over the lines of a file (a very common operation), the next() method uses a hidden read-ahead buffer. As a consequence of using a read-ahead buffer, combining next() with other file methods (like readline()) does not work right. """ I guess the phrasing "hidden read-ahead buffer" implies that buffering cannot be turned off (or at least it is not intended to even if it's somehow possible). George -- http://mail.python.org/mailman/listinfo/python-list
