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venv/lib/python3.9/site-packages/graphql/pyutils/frozen_dict.py

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+from copy import deepcopy
+from typing import Dict, TypeVar
+
+from .frozen_error import FrozenError
+
+__all__ = ["FrozenDict"]
+
+KT = TypeVar("KT")
+VT = TypeVar("VT")
+
+
+class FrozenDict(Dict[KT, VT]):
+    """Dictionary that can only be read, but not changed.
+
+    .. deprecated:: 3.2
+       Use dicts and the Mapping type instead. Will be removed in v3.3.
+    """
+
+    def __delitem__(self, key):
+        raise FrozenError
+
+    def __setitem__(self, key, value):
+        raise FrozenError
+
+    def __iadd__(self, value):
+        raise FrozenError
+
+    def __hash__(self) -> int:  # type: ignore
+        return hash(tuple(self.items()))
+
+    def __copy__(self) -> "FrozenDict":
+        return FrozenDict(self)
+
+    copy = __copy__
+
+    def __deepcopy__(self, memo: Dict) -> "FrozenDict":
+        return FrozenDict({k: deepcopy(v, memo) for k, v in self.items()})
+
+    def clear(self):
+        raise FrozenError
+
+    def pop(self, key, default=None):
+        raise FrozenError
+
+    def popitem(self):
+        raise FrozenError
+
+    def setdefault(self, key, default=None):
+        raise FrozenError
+
+    def update(self, other=None):
+        raise FrozenError