FIXUP python algorithms code

algorithms.py

@@ -115,7 +115,7 @@ def find(self, v):
 
 # Once we drop support for 3.9 we can use slots=True to prevent
 # writing extra attrs.
-@dataclasses.dataclass(slots=True)  # FIXME
+@dataclasses.dataclass  # (slots=True)
 class Segment:
     """
     A class representing a single segment. Each segment has a left