1.0

venv/lib/python3.11/site-packages/gpiozero/compat.py

@@ -0,0 +1,44 @@
+# vim: set fileencoding=utf-8:
+#
+# GPIO Zero: a library for controlling the Raspberry Pi's GPIO pins
+#
+# Copyright (c) 2016-2023 Dave Jones <dave@waveform.org.uk>
+# Copyright (c) 2020 Fangchen Li <fangchen.li@outlook.com>
+# Copyright (c) 2018 Rick Ansell <rick@nbinvincible.org.uk>
+# Copyright (c) 2016 Andrew Scheller <github@loowis.durge.org>
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
+import operator
+from functools import reduce
+from collections.abc import Mapping
+
+
+# Derived from the MIT-licensed https://github.com/slezica/python-frozendict
+class frozendict(Mapping):
+    def __init__(self, *args, **kwargs):
+        self._dict = dict(*args, **kwargs)
+        self._hash = None
+
+    def __getitem__(self, key):
+        return self._dict[key]
+
+    def __contains__(self, key):
+        return key in self._dict
+
+    def copy(self, **add_or_replace):
+        return frozendict(self, **add_or_replace)
+
+    def __iter__(self):
+        return iter(self._dict)
+
+    def __len__(self):
+        return len(self._dict)
+
+    def __repr__(self):
+        return f'<{self.__class__.__name__} {self._dict!r}>'
+
+    def __hash__(self):
+        if self._hash is None:
+            self._hash = reduce(operator.xor, map(hash, self.items()), 0)
+        return self._hash