Thanks a lot for all you helps. Alan your tutorial is very helpful But I have another problem which I will post soon.<br><br><div><span class="gmail_quote">On 2/26/07, <b class="gmail_sendername">Alan Gauld</b> <<a href="mailto:alan.gauld@btinternet.com">
alan.gauld@btinternet.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>"Nagendra Singh" <<a href="mailto:singh01@gmail.com">
singh01@gmail.com</a>> wrote<br><br>> Thanks a lot for all the suggestions. I used the function<br>> subprocess.call ( 'c:\abc.exe c:\data\file1'), but as before<br>> the command window opens and closes very fast
<br>> a value of 1 is displayed. How do I see the results??<br><br>The result is 1 which indicates an error. You don't want<br>the result you want the outpur, which is a different thing<br>entirely! :-)<br><br>To get the output you need to access the output stream
<br>of the process which is usually stdout. The old way to do<br>that was with os.popen, but the subprocess module<br>provides a new way. The m,odule docs describe how<br>to replace popen using subprocess' Popen class.
<br><br>My tutorial shows an example of the same thing based<br>on the odule documentation.<br><br>Basically it looks like:<br><br>import subprocess<br>psout = subprocess.Popen(r'c:\abc.exe c:\data\file1',<br>shell=True, stdout=PIPE).stdout
<br>results = psout.read().split('\n')<br>Notice I enclosed the command with a raw string.Otherwise your<br>backslashes get treated as escape characters. This might be why you<br>are getting error codes back?Another way to avoid that is to use
<br>forward slashes which Python understands on DOS psout =<br>subprocess.Popen('c:/abc.exe c:/data/file1',<br>shell=True, stdout=PIPE).stdout<br>> I am sorry if I sound dumb.<br><br>Nope, just looking for the wrong thing. But you only
<br>know that after you find out :-)<br><br>--<br>Alan Gauld<br>Author of the Learn to Program web site<br><a href="http://www.freenetpages.co.uk/hp/alan.gauld">http://www.freenetpages.co.uk/hp/alan.gauld</a><br><br><br>_______________________________________________
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