Re: [Tutor] How to pass a python variable to subprocess.call?
On Tue, Oct 26, 2010 at 3:31 AM, Sean Carolan scaro...@gmail.com wrote: I'm rewriting a bunch of my bash scripts to get some python practice. There are some instances where python doesn't have the built-in text processing that I need, so I'm using subprocess.call. How can I pass a python variable to these subprocesses? For example: mydir = /usr/local/bin subprocess.call(ls -l /usr/local/bin, shell=True) subprocess.call(ls -l +mydir,shell=True) will do the job. In python, we can simply concatenate the strings like that. How do I replace /usr/local/bin in the subprocess call with the mydir variable? ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor -- Abhijeet Rastogi (shadyabhi) http://www.google.com/profiles/abhijeet.1989 ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] How to pass a python variable to subprocess.call?
On Mon, Oct 25, 2010, Sean Carolan wrote: I'm rewriting a bunch of my bash scripts to get some python practice. There are some instances where python doesn't have the built-in text processing that I need, so I'm using subprocess.call. How can I pass a python variable to these subprocesses? For example: mydir = /usr/local/bin subprocess.call(ls -l /usr/local/bin, shell=True) How do I replace /usr/local/bin in the subprocess call with the mydir variable? subprocess.call(ls -l '%s' % mydir, shell=True) Bill -- INTERNET: b...@celestial.com Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way Voice: (206) 236-1676 Mercer Island, WA 98040-0820 Fax:(206) 232-9186 Skype: jwccsllc (206) 855-5792 Whatever the State saith is a lie; whatever it hath is a theft. -- Nietzsche ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] How to pass a python variable to subprocess.call?
On 25-Oct-10 15:19, Abhijeet Rastogi wrote: subprocess.call(ls -l +mydir,shell=True) will do the job. In python, we can simply concatenate the strings like that. How do I replace /usr/local/bin in the subprocess call with the mydir variable? It's often preferable (for reasons ranging from security to coding style) to use the array call style for the subprocess methods, so instead of a string which must then be interpreted by the shell (and allowing for unintended interpretation of shell characters like quotes and wildcards), you instead pass a list of values for the new process, so the shell is never even involved: subprocess.call(['ls', '-l', mydir]) ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
