Document __spec__.location 'frozen' value

[Cheaterman]

As noted in https://docs.python.org/3/whatsnew/3.4.html :
« If you must know that a module comes from frozen code
then you can see if the module’s __spec__.location is
set to 'frozen', check if the loader is a subclass of
importlib.machinery.FrozenImporter, or if Python 2
compatibility is necessary you can use imp.is_frozen(). »

[the-knights-who-say-ni]

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[Cheaterman]

CLA signed by the way :-)

[Cheaterman]

Should I maybe create an issue on bugs.python.org ?

[brettcannon]

@Cheaterman nope, a bug report isn't necessary for a doc fix like this.

[brettcannon]

@warsaw @ericsnowcurrently @ncoghlan @encukou what do you all think of updating the language reference to say that __spec__.origin will say "frozen" for frozen modules? Is it worth having that strong of a guarantee? Or just document it in the importlib docs?

[ericsnowcurrently]

Frozen modules are a CPython-specific feature, no?

[brettcannon]

@ericsnowcurrently yep

[brettcannon]

Based on the fact that frozen modules are specific to CPython and not the language, I'm going to close this. Thanks for the PR regardless, @Cheaterman !

[Cheaterman]

Likewise, thanks to you for your consideration :-) Le jeu. 26 mars 2020 à 18:42, Brett Cannon <notifications@github.com> a écrit :

…

Closed #18686 <#18686>. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#18686 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAANLNSQEHHKMXKB2PQ6TXTRJOHZVANCNFSM4K5SY5BA> .

[altendky]

Where does this information belong? If the issue is that it is CPython specific then wouldn't that just warrant a disclaimer explaining such? Also, FrozenImporter is documented without any 'this is a CPython implementation detail' note.

[brettcannon]

@altendky the importlib docs is a relevant place for this.