On Wed, Apr 10, 2013 at 6:59 AM, Walter Hurry <walterhu...@lavabit.com> wrote: > On Tue, 09 Apr 2013 16:12:34 -0400, Dave Angel wrote: > >> On 04/09/2013 03:35 PM, Walter Hurry wrote: >>> On Wed, 10 Apr 2013 02:10:29 +1000, Chris Angelico wrote: >>> >>>> On Wed, Apr 10, 2013 at 1:47 AM, <thomasancill...@gmail.com> wrote: >>>>> ... I'm not sure what version I'm using ... >>>> >>>> Try putting these lines into a Python script: >>>> >>>> import sys print(sys.version) >>>> >>> That works (of course), but in every Python version I've seen, one >>> merely needs to invoke the python interactive interpreter and the >>> banner is displayed: >>> >>> $ python Python 2.7.3 (default, Aug 9 2012, 17:23:57) >>> [GCC 4.7.1 20120720 (Red Hat 4.7.1-5)] on linux2 Type "help", >>> "copyright", "credits" or "license" for more information. >>>>>> quit() >>> $ >>> >>> >> And if several are installed, that isn't necessarily the one that'll run >> when one runs a script. Depends on how the script is invoked (and on >> what OS is running), and on the shebang line, PATH, etc. >> >> The real point about those two lines is that they can be added to most >> scripts. > > Well yes, but if multiple versions are installed and the script has a > shebang, then invoking the same interpreter as the shebang does will > produce the same result.
I still went with a guaranteed-safe option. Adding those two lines to his script is sure to report on the Python being used to run the script, and it's not as if it's a massively-complex incantation :) > But this is dancing on the head of a pin anyway; OP just didn't know what > version of Python he was running, so he is extremely unlikely to have > more than one version installed, and to be choosing amongst them. Dunno about that. It's pretty easy to have two versions of something without understanding why. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
