Access to the caller's globals, not your own

[Steven D'Aprano]

On Monday 14 November 2016 16:55, eryk sun wrote:

> On Mon, Nov 14, 2016 at 5:20 AM, Steven D'Aprano
> <steve+comp.lang.python at pearwood.info> wrote:
>> but what magic do I need? globals() is no good, because it returns the
>> library's global namespace, not the caller's.
>>
>> Any solution ought to work for CPython, IronPython and Jython, at a minimum.
> 
> You can access the globals of the caller's frame, but you'll have to
> research to what extent IronPython and Jython support CPython frame
> objects.
> 
> FWIW:
> 
>     import inspect
> 
>     SPAMIFY = True
> 
>     def make_spam(n):
>         caller_globals = inspect.currentframe().f_back.f_globals
>         if caller_globals.get('SPAMIFY', SPAMIFY):
>             return "spam" * n
>         else:
>             return "ham" * n

Nice! That appears to work on Jython, but not IronPython.

Thanks for the suggestion.





-- 
Steven
299792.458 km/s — not just a good idea, it’s the law!