feat: add python none test

python_annotation_test.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 def attr(cls):
     cls._attr1 = 'test'
     return cls

python_none_test.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+
+from typing import Optional, Union, NamedTuple
+
+
+class Point(NamedTuple):
+    x: Optional[int] = None
+    y: Union[int, None] = None
+    z: int | None = None
+
+
+if __name__ == "__main__":
+    print(Point(x=1))
+    print(Point(y=1))
+    print(Point(z=1))