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bpo-30535: Explicitly note that sys.meta_path is not empty #13300

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bpo-30535: Explicitly note that sys.meta_path is not empty #13300

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3 changes: 2 additions & 1 deletion Doc/library/sys.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -926,7 +926,8 @@ always available.

A list of :term:`meta path finder` objects that have their
:meth:`~importlib.abc.MetaPathFinder.find_spec` methods called to see if one
of the objects can find the module to be imported. The
of the objects can find the module to be imported. By default, it holds entries
to handle the standard kinds of modules (.py files, extension modules...). The
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to handle the standard kinds of modules (.py files, extension modules...). The
that implement Python's default import semantics. The

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@brettcannon Do you think we should add examples after that. Like:

that implement Python's default import semantics. (BuiltinImporter, FrozenImporter, and PathFinder)

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No, as that's too easy of a thing to forget to update. Plus there's no guarantee that every interpreter will set up sys.meta_path the same.

:meth:`~importlib.abc.MetaPathFinder.find_spec` method is called with at
least the absolute name of the module being imported. If the module to be
imported is contained in a package, then the parent package's :attr:`__path__`
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