redirecting output

[Oliver Schaefer]

Hi,

Good news!

os.popen still doesn't work on Win 9x, but win32pipe.popen, 
win32pipe.popen2 and win32pipe.popen3 do work if you have recent versions
of msvcrt installed.

I have installed the Y2K patch from MS ("W95Y2K.EXE" - 2228 KB)
and *since then*, the following test script worked flawlessly from
within PythonWin, IDLE and generally with pythonw.exe.

FYI, I have Win 95 B, win32all-128 and Python 1.5.42 (stackless) installed.


Regards,
Oliver Schaefer  [ SchaeferFFM at gmx.de ]


[test_popen.py]------------------------------

import win32pipe, sys

write = sys.stdout.write

def test_popen(cmd='dir *.py'):
    return win32pipe.popen(cmd).read()
# def test_popen(cmd='dir *.py')

def test_popen2(cmd='python -i', line='print "hi"'):
    writer, reader = win32pipe.popen2(cmd)
    writer.write('%s\n' % line)
    return reader.readline()
# def test_popen2(cmd='python -i', line='print "hi"')

def test_popen3(cmd='python -h'):
    writer, reader, err = win32pipe.popen3(cmd)
    return err.read()
# def test_popen3(cmd='python -h')

def test():
    print ">>> win32pipe.popen('dir *.py').read()"
    write(test_popen())
    print ">>> writer, reader = win32pipe.popen2('python -i')"
    print r'''>>> writer.write('print "hi"\n')'''
    print '>>> reader.readline()'
    write(test_popen2())
    print ">>> win32pipe.popen3('python -h')[2].read()"
    write(test_popen3())
# def test()

if __name__ == '__main__':
    test()

[EOF]-------------------------------


----- Original Message ----- 
From: Niels Diepeveen <niels at endea.demon.nl>
Newsgroups: comp.lang.python
Sent: Friday, March 03, 2000 5:39 PM
Subject: Re: redirecting output


> 
> 
> Emile van Sebille schreef:
> 
> > >>> import os
> > >>> os.popen("dir").read()
> > Traceback (innermost last):
> >   File "<pyshell#1>", line 1, in ?
> >     os.popen("dir").read()
> > OSError: (0, 'Error')
> 
> os.popen only works in a console session, not from pythonw. This is a
> problem in the C library.
> 
> -- 
> Niels Diepeveen
> Endea automatisering
> 
>