On Wed, Jan 9, 2013 at 8:14 PM, T. Girowall <tgirow...@yahoo.com> wrote: > > > c:\scripts\perl>perl plscript.pl -cmnd1 -cmnd2 > > cmnd1 and cmnd2 are ran on files that reside within "perl" directory. > > My objective: > 1. Run the perl script using python > 2. Capture the results from the DOS window and save it to python. Output > consists of text names and corresponding numbers. > > I'm using python 2.7
subprocess.check_output returns piped stdout (optionally including stderr) from a process http://docs.python.org/2/library/subprocess#subprocess.check_output universal_newlines=True replaces the Windows CRLF ('\r\n') line endings with LF ('\n'). To set the working directory use cwd='c:/scripts/perl' (see [1]). On Windows you can pass args as a string if you need non-standard quoting. If you use a list instead, subprocess builds a string quoted according to Microsoft's rules: http://docs.python.org/2/library/subprocess#converting-argument-sequence If the call fails check_output raises subprocess.CalledProcessError: http://docs.python.org/2/library/subprocess#subprocess.CalledProcessError For example: import subprocess output = subprocess.check_output( ['perl.exe', 'plscript.pl', '-cmnd1', '-cmnd2'], universal_newlines=True, cwd='c:/scripts/perl', ) Windows CreateProcess will search for 'perl.exe' on the system PATH. For increased security you can use an absolute path such as 'C:/perl/bin/perl.exe'. 1. Using a forward slash in paths is OK for DOS/Windows system calls (e.g. opening a file or setting the cwd of a new process), dating back to the file system calls in MS-DOS 2.0 (1983). Otherwise a backslash is usually required (e.g. shell commands and paths in commandline arguments, where forward slash is typically used for options). In this case use a raw string or os.path.join. For a raw string, note that a trailing backslash is not allowed, e.g. r'C:\Python27\'. Instead you could use r'C:\Python27' '\\', among other options: http://docs.python.org/2/faq/design.html#why-can-t-raw-strings-r-strings-end-with-a-backslash _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
