subprocess.popen question

Eric_Dexter at msn.com Eric_Dexter at msn.com
Wed Jun 20 21:28:06 EDT 2007


On Jun 20, 7:50 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
wrote:
> En Wed, 20 Jun 2007 20:02:52 -0300, Eric_Dex... at msn.com  
> <Eric_Dex... at msn.com> escribió:
>
>
>
>
>
> > On Jun 20, 1:46 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar>
> > wrote:
>
> >> cmd = ["gawk", "-f", "altertime.awk", "-v", "time_offset=4", "-v",
> >> "outfile=testdat.sco", "i1.sco"]
> >> Now, what do you want to do with the output? Printing it line by line?
> >> output = subprocess.Popen(cmd, stdout=subprocess.PIPE).communicate()[0]
> >> lines = output.splitlines()
> >> for line in lines:
> >>    print line
>
> >  C:\dex_tracker\pipe1.py
> > Traceback (most recent call last):
> >  File "C:\dex_tracker\pipe1.py", line 14, in
> > last_line = subprocess.Popen([cmd],
> > stdout=subprocess.PIPE).communicate()[0]
> >  File "C:\Python25\lib\subprocess.py", line 593, in __init__
> > errread, errwrite)
> >  File "C:\Python25\lib\subprocess.py", line 793, in _execute_child
> > startupinfo)
> > WindowsError: [Error 2] The system cannot find the file specified
> > Script terminated.
>
> > I can write it out as a batch file and then run it but that is a messy
> > hack..
>
> If cmd is a list of arguments, like the example above, you should use  
> subprocess.Popen(cmd,...) (like the example above, too).
>
> --
> Gabriel Genellina- Hide quoted text -
>
> - Show quoted text -


I had cut and pasted the example in to get that error...  could it be
a problem with ms windows??? (I am at a library computer befour work
so that ended my testing)




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