Rob Wolfe wrote:
Ian Simcock <ian.simc...@internode.on.net> writes:
When file object is used in a for loop it works like an iterator
and then it uses a hidden read-ahead buffer.
It might cause this kind of blocking.
You can read more details here (description of method ``next``):
http://docs.python.org/lib/bltin-file-objects.html
So basically non-blocking loop might look like this:
while True:
line = p.stdout.readline()
if not line: break
print line
HTH,
Rob
Thanks, but some further research seems to indicate that the problem is
that the standard C libraries are probably buffering the output when the
it's being redirected, so the problem is coming from the command line
tool rather than the python code.
Ian Simcock.
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