Correct idiom for determining path when frozen in 3.4
ben+python at benfinney.id.au
Mon Mar 17 10:23:59 CET 2014
Devin Jeanpierre <jeanpierreda at gmail.com> writes:
> On Mon, Mar 17, 2014 at 2:02 AM, Ben Finney <ben+python at benfinney.id.au> wrote:
> > Mark Summerfield <list at qtrac.plus.com> writes:
> > if getattr(sys, "frozen"): # ‘getattr’ will return None by default
> No it won't.
> Sure, but sys.executable always exists.
My apologies for posting untested code without making that clear. Thanks
to Devin for picking up my mistakes.
> > Lastly, it's slightly more Pythonic to execute the normal path
> > unconditionally, and let it raise an exception if there's a problem::
> > try:
> > executable = sys.executable
> > except AttributeError:
> > executable = __file__
> > path = os.path.dirname(executable)
> sys.frozen doesn't [necessarily exist], and the existence or
> nonexistence is apparently meaningful; so your code does something
> different than the original problem statement.
Right. I didn't understand why ‘__file__’ is a suitable substitute for
‘sys.executable’; they're always (?) different values. So that probably
is what led to the confusion in the code behaviour.
I hope the Pythonic idioms are helpful to the original poster
\ “Anyone who believes exponential growth can go on forever in a |
`\ finite world is either a madman or an economist.” —Kenneth |
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