1 files changed, 32 insertions, 0 deletions
diff --git a/meta/model/enum.py b/meta/model/enum.py
new file mode 100644
index 0000000000..08dda4bf4a
--- /dev/null
+++ b/meta/model/enum.py
@@ -0,0 +1,32 @@
+import enum
+
+
+class StrEnum(str, enum.Enum):
+    """
+    StrEnum is a Python ``enum.Enum`` that inherits from ``str``. The default
+    ``auto()`` behavior uses the member name as its value.
+
+    Example usage::
+
+        class Example(StrEnum):
+            UPPER_CASE = auto()
+            lower_case = auto()
+            MixedCase = auto()
+
+        assert Example.UPPER_CASE == "UPPER_CASE"
+        assert Example.lower_case == "lower_case"
+        assert Example.MixedCase == "MixedCase"
+    """
+
+    def __new__(cls, value, *args, **kwargs):
+        if not isinstance(value, (str, enum.auto)):
+            raise TypeError(
+                f"Values of StrEnums must be strings: {value!r} is a {type(value)}"
+            )
+        return super().__new__(cls, value, *args, **kwargs)
+
+    def __str__(self):
+        return str(self.value)
+
+    def _generate_next_value_(name, *_):
+        return name