On Wed, Nov 19, 2008 at 2:38 PM, Catherine Moroney <[EMAIL PROTECTED]> wrote: > Dan Upton wrote: >> >> On Wed, Nov 19, 2008 at 2:13 PM, Philip Semanchuk <[EMAIL PROTECTED]> >> wrote: >>> >>> On Nov 19, 2008, at 2:03 PM, Catherine Moroney wrote: >>> >>>> The command (stored as an array of strings) that I'm executing is: >>>> >>>> ['python ../src_python/Match1.py ', >>>> '--file_ref=MISR_AM1_GRP_ELLIPSOID_GM_P228_O003571_BF_F03_0024.hdf ', >>>> '--file_cmp=MISR_AM1_GRP_ELLIPSOID_GM_P228_O003571_DF_F03_0024.hdf ', >>>> '--block_start=62 ', '--block_end=62 ', '--istep=16 ', "--chmetric='M2' >>>> ", >>>> "--use_textid='true '"] >>>> >>> [snip] >>> >>>> I get the error below. Does anybody know what this error refers >>>> to and what I'm doing wrong? Is it even allowable to call another >>>> script as a sub-process rather than calling it directly? >>>> >>>> File "../src_python/Match4.py", line 24, in RunMatch4 >>>> sub1 = subprocess.Popen(command1) >>>> File "/usr/lib64/python2.5/subprocess.py", line 593, in __init__ >>>> errread, errwrite) >>>> File "/usr/lib64/python2.5/subprocess.py", line 1051, in _execute_child >>>> raise child_exception >>>> OSError: [Errno 2] No such file or directory >>> >>> Try supplying a fully-qualified path to your script, e.g.: >>> ['python /home/catherine/src_python/Match1.py ', >>> '--file_ref=MISR_AM1_GRP_ELLIPSOID_GM_P228_O003571_BF_F03_0024.hdf ', >>> '--file_cmp=MISR_AM1_GRP_ELLIPSOID_GM_P228_O003571_DF_F03_0024.hdf ', >>> '--block_start=62 ', '--block_end=62 ', '--istep=16 ', "--chmetric='M2' >>> ", >>> "--use_textid='true '"] >> >> I think when I came across this error, I added shell=True, e.g. >> >> sub1 = subprocess.Popen(command, shell=True) > > I added the shell=True and this time it got into Match1 (hurrah!), > but it then opened up an interactive python session, and didn't > complete until I manually typed 'exit' in the interactive session. > > Match1 looks like: > > if __name__ == "__main__": > <<< parse arguments >>> > > RunMatch1(file_ref, file_cmp, iblock_start, iblock_end, \ > nlinep, nsmpp, mindispx, maxdispx, mindispl, \ > maxdispl, istep, chmetric, use_textid) > > exit() > > where the routine RunMatch1 does all the actual processing. > > How do I get Match1 to run and exit normally without opening up an > interactive session, when called as a subprocess from Match4? >
Alternately, rather than using a list of arguments, have you tried just using a string? (Again, that's the way I do it and I haven't been having any problems recently, although I'm running shell scripts or binaries with arguments rather than trying to invoke python on a script.) command = "python ../src_python/Match1.py --file_ref=MISR_AM1_GRP_ELLIPSOID_GM_P228_O003571_BF_F03_0024.hdf --file_cmp=MISR_AM1_GRP_ELLIPSOID_GM_P228_O003571_DF_F03_0024.hdf --block_start=62 --block_end=62 --istep=16 --chmetric='M2' --use_textid=true" proc = subprocess.Popen(command, shell=True) -- http://mail.python.org/mailman/listinfo/python-list
