On 7/11/05, Frank Guenther <[EMAIL PROTECTED]> wrote:
> Hi All,
>
> I try to automate a command line tool and have the problem that I can't
> read the stdout-pipe.
> I think the reason is the tool doesn't flush the pipe so it is first
> readable when the process was closed.
> Can I set the buffer size of the stdout-pipe by win32pipe to force the
> tool to write to the pipe?
>
> Is there a possibility to use win32file to get a low-level access to the
> pipes or some other solution to the problem?
Have you tried standard subprocess module? It uses unbuffered i/o by default.
> I would be thankful for some hints and example code.
Hope this helps:
---- echo.py
import sys
if __name__ == '__main__':
print 'echo>',
print sys.stdin.readline()
---- caller.py
import subprocess
if __name__ == '__main__':
child = subprocess.Popen(
['python', 'echo.py'],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE
)
child.stdin.write('spam\n')
print 'received:', child.stdout.readline()
child.wait()
- kv
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