[Python-Dev] feature request: inspect.isgenerator

Georg Brandl g.brandl at gmx.net
Thu Jun 1 15:06:31 CEST 2006

Michele Simionato wrote:
> Georg Brandl <g.brandl <at> gmx.net> writes:
>> > Also, should one add
>> > a GeneratorType, perhaps as a subclass of FunctionType?
>> Add GeneratorType where? There is already one in the types module.
> Yep, this is the crux. types.GeneratorType refers to generator objects,
> which in an improper sense are "instances" of a "generator function".
> I.e.
> def g(): yield 1 # this is a generator
> go = g() # this is a generator object
> I want isgenerator(g) == True, but isgenerator(go) == False.

Ah, ok. But then I would name the function differently, perhaps

> So, what should be the class of g ? Maybe we can keep FunctionType
> and don't bother.

I would say, keep FunctionType. There's no real need to know the exact
type except for inspecting, and for that, the new function in inspect
can be used.


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