On Jun 20, 1:46 pm, "Gabriel Genellina" <[EMAIL PROTECTED]> wrote: > En Wed, 20 Jun 2007 12:27:47 -0300, [EMAIL PROTECTED] > <[EMAIL PROTECTED]> escribió: > > > I am trying to modify a programming example and I am coming up with > > two problems... first is that I can't seem to pass along the > > arguments to the external command (I have been able to do that with > > the old module and cmd is the command I wish to try) all the output > > seems to be returned as one line (at least when I run the program in > > spe). > > > import subprocess > > from os import system > > cmd = """gawk -f altertime.awk -v time_offset=4 -v > > outfile="testdat.sco" "i1.sco" """ > > #subprocess.Popen. > > last_line = subprocess.Popen(['gawk.exe'], > > stdout=subprocess.PIPE).communicate()[0] > > You build what appears to be the desired command line, but execute > gawk.exe instead. > Better split the arguments beforehand: > 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 > > -- > Gabriel Genellina
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..
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