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venv/lib/python3.12/site-packages/packaging/_structures.py

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+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+"""Backward-compatibility shim for unpickling Version objects serialized before
+packaging 26.1.
+
+Old pickles reference ``packaging._structures.InfinityType`` and
+``packaging._structures.NegativeInfinityType``.  This module provides minimal
+stand-in classes so that ``pickle.loads()`` can resolve those references.
+The deserialized objects are not used for comparisons — ``Version.__setstate__``
+discards the stale ``_key`` cache and recomputes it from the core version fields.
+"""
+
+from __future__ import annotations
+
+
+class InfinityType:
+    """Stand-in for the removed ``InfinityType`` used in old comparison keys."""
+
+    def __repr__(self) -> str:
+        return "Infinity"
+
+
+class NegativeInfinityType:
+    """Stand-in for the removed ``NegativeInfinityType`` used in old comparison keys."""
+
+    def __repr__(self) -> str:
+        return "-Infinity"
+
+
+Infinity = InfinityType()
+NegativeInfinity = NegativeInfinityType()