Major fixes and new features

venv/lib/python3.12/site-packages/mypy/split_namespace.py

@@ -0,0 +1,35 @@
+"""Split namespace for argparse to allow separating options by prefix.
+
+We use this to direct some options to an Options object and some to a
+regular namespace.
+"""
+
+# In its own file largely because mypyc doesn't support its use of
+# __getattr__/__setattr__ and has some issues with __dict__
+
+from __future__ import annotations
+
+import argparse
+from typing import Any
+
+
+class SplitNamespace(argparse.Namespace):
+    def __init__(self, standard_namespace: object, alt_namespace: object, alt_prefix: str) -> None:
+        self.__dict__["_standard_namespace"] = standard_namespace
+        self.__dict__["_alt_namespace"] = alt_namespace
+        self.__dict__["_alt_prefix"] = alt_prefix
+
+    def _get(self) -> tuple[Any, Any]:
+        return (self._standard_namespace, self._alt_namespace)
+
+    def __setattr__(self, name: str, value: Any) -> None:
+        if name.startswith(self._alt_prefix):
+            setattr(self._alt_namespace, name[len(self._alt_prefix) :], value)
+        else:
+            setattr(self._standard_namespace, name, value)
+
+    def __getattr__(self, name: str) -> Any:
+        if name.startswith(self._alt_prefix):
+            return getattr(self._alt_namespace, name[len(self._alt_prefix) :])
+        else:
+            return getattr(self._standard_namespace, name)