Does inspect.getstack work on other Python implementations?

[Ed Kellett]

On 2018-06-17 10:19, Steven D'Aprano wrote:
> Anyone here use IronPython, Jython or PyPy?
> 
> Does inspect.getstack always work? Is it considered an implementation
> detail for CPython or something promised to work on any compliant
> Python interpreter?
> 
> I see that it doesn't even exist on Jython 2.5, does anyone know 
> whether it exists in later versions?

Well, inspect.currentframe says:

> CPython implementation detail: This function relies on Python stack 
> frame support in the interpreter, which isn’t guaranteed to exist in 
> all implementations of Python. If running in an implementation 
> without Python stack frame support this function returns None.

and presumably if stack frame support isn't guaranteed to exist for one
inspect function it's similarly un-guaranteed in others.

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