Normalize FuncDict and FuncSet util collections key and value callabl…

…es (#102)

src/faebryk/libs/util.py

@@ -1010,16 +1010,14 @@ def __init__(
     def __contains__(self, item: T):
         return item in self._keys[self._hasher(item)]
 
-    @property
     def keys(self) -> Iterator[T]:
         yield from chain.from_iterable(self._keys.values())
 
-    @property
     def values(self) -> Iterator[U]:
         yield from chain.from_iterable(self._values.values())
 
     def __iter__(self) -> Iterator[T]:
-        yield from self.keys
+        yield from self.keys()
 
     def __len__(self) -> int:
         return sum(len(v) for v in self._values.values())
@@ -1054,7 +1052,7 @@ def __delitem__(self, key: T):
 
     def items(self) -> Iterable[tuple[T, U]]:
         """Iter key-value pairs as items, just like a dict."""
-        yield from zip(self.keys, self.values)
+        yield from zip(self.keys(), self.values())
 
     def __repr__(self) -> str:
         return (