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authorBarry Warsaw <barry@python.org>2021-10-20 14:05:29 -0700
committerGitHub <noreply@github.com>2021-10-20 14:05:29 -0700
commit876fc7fcec9a79a11546b7588d3683a5ccb4d31c (patch)
tree9195e6474ea19461bbc5d9705f05bd2cf8603209 /Lib/importlib/_bootstrap_external.py
parent6270d3eeaf17b50abc4f8f4d97790d66179638e4 (diff)
downloadcpython-876fc7fcec9a79a11546b7588d3683a5ccb4d31c.tar.gz
cpython-876fc7fcec9a79a11546b7588d3683a5ccb4d31c.zip
bpo-35673: Add a public alias for namespace package __loader__ attribute (#29049)
Rename namespace package __loader__ class to be public. Make the old name, i.e. _NamespaceLoader, an alias for the public name, for backward compatibility.
Diffstat (limited to 'Lib/importlib/_bootstrap_external.py')
-rw-r--r--Lib/importlib/_bootstrap_external.py12
1 files changed, 9 insertions, 3 deletions
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index c9692b542a5..ef4f23a4b49 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -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: