On 24 January 2013 15:51, Tim Golden <m...@timgolden.me.uk> wrote: > On 24/01/2013 15:28, Oscar Benjamin wrote: >> On 24 January 2013 13:45, Tim Golden <m...@timgolden.me.uk> wrote: >>> On 24/01/2013 11:30, Oscar Benjamin wrote: >>>> I don't really understand what your spec is. Why do you need to >>>> inspect this information from sys.argv? Can you not just always use >>>> 'python -m pkg' as your entry point? >>> >> [SNIP] >>> >>> For completeness, I'm talking about the cherrypy Autoreloader which >>> attempts to restart (via execv) whatever process was responsible for >>> loading it in the first place, via an identical or equivalent command >>> line. The current (cherrypy) code simply joins sys.executable and >>> sys.argv but this fails in the face of python -m as we have seen. >>> >>> The cherrypy package has no especial knowledge of the structure of the >>> application which imported it and so must piece together the command >>> line somehow. Clearly, I can take various approaches of the sort >>> which you've outlined, or subclass the reloader, or fetch the original >>> command line from the OS, etc. It's not that this is a showstopper, >>> merely slightly surprising. (To me). >> >> Ok I understand. Then I guess you want: >> >> import __main__ >> pkg = __main__.__package__ > > Brilliant. Never thought of importing __main__. Thanks. > > For the benefit of anyone still watching, the code (which has to be > compatible back to 2.3) looks something like this: > > <code> > import __main__ > > # [.. .snip ...] > > try: > is_package = bool(__main__.__package__) > except NameError: > is_package = False > if is_package: > args = [sys.executable, '-m', __main__.__package__] + sys.argv[1:] > else: > args = [sys.executable] + sys.argv > > os.chdir(_startup_cwd) # avoids relative/absolute issues > os.execv(args[0], args) > > </code> > > I don't pretend it's foolproot, but it certainly works for my particular > case. Nor have I considered it against all the cases identified in PEP > 432: http://www.python.org/dev/peps/pep-0432/#configuring-sys-argv
Does it work if you use the -m option to run a module rather than a script? Oscar -- http://mail.python.org/mailman/listinfo/python-list
