type issue

something.py

@@ -0,0 +1,19 @@
+from typing import Self
+
+class Foo:
+    def __init__(self, x: int) -> None:
+        self.x = x
+
+    def combine(self: Self, other: Self) -> Self:
+        return Foo(self.x + other.x)
+
+    def __repr__(self: Self):
+        return f"Self {{ x: {self.x} }}"
+
+def main():
+    f = Foo(3)
+    g = Foo(4)
+    h = f.combine(g)
+    print(f"{f=} {g=} {h=}")
+
+main()