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venv/lib/python3.9/site-packages/cloudpickle/compat.py

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+import sys
+
+
+if sys.version_info < (3, 8):
+    try:
+        import pickle5 as pickle  # noqa: F401
+        from pickle5 import Pickler  # noqa: F401
+    except ImportError:
+        import pickle  # noqa: F401
+
+        # Use the Python pickler for old CPython versions
+        from pickle import _Pickler as Pickler  # noqa: F401
+else:
+    import pickle  # noqa: F401
+
+    # Pickler will the C implementation in CPython and the Python
+    # implementation in PyPy
+    from pickle import Pickler  # noqa: F401