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-rw-r--r--Lib/importlib/abc.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/Lib/importlib/abc.py b/Lib/importlib/abc.py
index bbff7af..d2f4509 100644
--- a/Lib/importlib/abc.py
+++ b/Lib/importlib/abc.py
@@ -342,7 +342,7 @@ class SourceLoader(_bootstrap_external.SourceLoader, ResourceLoader, ExecutionLo
_register(SourceLoader, machinery.SourceFileLoader)
-class ResourceReader:
+class ResourceReader(metaclass=abc.ABCMeta):
"""Abstract base class to provide resource-reading support.
@@ -383,3 +383,6 @@ class ResourceReader:
def contents(self):
"""Return an iterator of strings over the contents of the package."""
return iter([])
+
+
+_register(ResourceReader, machinery.SourceFileLoader)