Bugs item #548661, was opened at 2002-04-25 10:30 Message generated for change (Comment added) made by ianbicking You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=548661&group_id=5470
Category: Python Library Group: Feature Request Status: Open Resolution: None Priority: 5 Submitted By: Ian Bicking (ianbicking) Assigned to: Nobody/Anonymous (nobody) Summary: os.popen w/o using the shell Initial Comment: I heard that there was an undocumented feature to the os.popen family, where instead of passing a command string as the first argument you could pass a list, as [path, arg1, arg2, ...], and circumvent any shell interpretation. I was disapointed to see that this was not so ("popen() argument 1 must be string, not list" ditto tuple) I believe this would be an excellent feature -- using the shell is a significant source of errors due to quoting, as well as a serious security concern. 95% of the time the shell is not required. The shell also introduces portability concerns (e.g., bug #512433) -- creating a Python shell is not necessary when the shell is usually superfluous anyway. ---------------------------------------------------------------------- >Comment By: Ian Bicking (ianbicking) Date: 2005-04-19 11:45 Message: Logged In: YES user_id=210337 This may not matter enough to resolve now, with the advent of the subprocess module. ---------------------------------------------------------------------- Comment By: Peter Åstrand (astrand) Date: 2003-11-01 10:29 Message: Logged In: YES user_id=344921 popen5 never uses the shell (http://www.lysator.liu.se/~astrand/popen5/) ---------------------------------------------------------------------- Comment By: Julián Muñoz (julian69) Date: 2003-01-08 10:15 Message: Logged In: YES user_id=77756 Does this mean that giving a list to popen2 free us from taking care of the dangerous characters that could be interprated/escaped by the shell ??? I don't find any documentation about this feature !!! ---------------------------------------------------------------------- Comment By: Ian Bicking (ianbicking) Date: 2002-04-25 13:18 Message: Logged In: YES user_id=210337 I see you are correct. It would be nice if this feature was consistent across all popen*, and was also documented (and so also committed to with clear semantics) ---------------------------------------------------------------------- Comment By: Martin v. Löwis (loewis) Date: 2002-04-25 13:13 Message: Logged In: YES user_id=21627 This feature is indeed available in popen2. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=548661&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
