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bpo-35673: Add a public alias for namespace package __loader__ attribute (#29049)

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Rename namespace package __loader__ class to be public.

Make the old name, i.e. _NamespaceLoader, an alias for the public name, for backward compatibility.
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Barry Warsaw 2021-10-20 14:05:29 -07:00 • committed by GitHub
parent 6270d3eeaf
commit 876fc7fcec
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7 changed files with 42 additions and 6 deletions
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12
Lib/importlib/_bootstrap_external.py
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@ -1279,8 +1279,10 @@ class _NamespacePath:
self._path.append(item)
# We use this exclusively in module_from_spec() for backward-compatibility.
class _NamespaceLoader:
# This class is actually exposed publicly in a namespace package's __loader__
# attribute, so it should be available through a non-private name.
# https://bugs.python.org/issue35673
class NamespaceLoader:
def __init__(self, name, path, path_finder):
self._path = _NamespacePath(name, path, path_finder)
@ -1291,7 +1293,7 @@ class _NamespaceLoader:
The method is deprecated. The import machinery does the job itself.
"""
_warnings.warn("_NamespaceLoader.module_repr() is deprecated and "
_warnings.warn("NamespaceLoader.module_repr() is deprecated and "
"slated for removal in Python 3.12", DeprecationWarning)
return '<module {!r} (namespace)>'.format(module.__name__)
@ -1327,6 +1329,10 @@ class _NamespaceLoader:
return NamespaceReader(self._path)
# We use this exclusively in module_from_spec() for backward-compatibility.
_NamespaceLoader = NamespaceLoader
# Finders #####################################################################
class PathFinder: