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venv/lib/python3.9/site-packages/docker/credentials/errors.py

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+class StoreError(RuntimeError):
+    pass
+
+
+class CredentialsNotFound(StoreError):
+    pass
+
+
+class InitializationError(StoreError):
+    pass
+
+
+def process_store_error(cpe, program):
+    message = cpe.output.decode('utf-8')
+    if 'credentials not found in native keychain' in message:
+        return CredentialsNotFound(f'No matching credentials in {program}')
+    return StoreError(f'Credentials store {program} exited with "{message}".')