Ajout type contrat

venv/lib/python3.12/site-packages/django/utils/hashable.py

@@ -0,0 +1,26 @@
+from collections.abc import Iterable
+
+
+def make_hashable(value):
+    """
+    Attempt to make value hashable or raise a TypeError if it fails.
+
+    The returned value should generate the same hash for equal values.
+    """
+    if isinstance(value, dict):
+        return tuple(
+            [
+                (key, make_hashable(nested_value))
+                for key, nested_value in sorted(value.items())
+            ]
+        )
+    # Try hash to avoid converting a hashable iterable (e.g. string, frozenset)
+    # to a tuple.
+    try:
+        hash(value)
+    except TypeError:
+        if isinstance(value, Iterable):
+            return tuple(map(make_hashable, value))
+        # Non-hashable, non-iterable.
+        raise
+    return value