[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

data_structures/heap/skew_heap.py

@@ -62,7 +62,9 @@ def value(self) -> T:
         return self._value
 
     @staticmethod
-    def merge(root1: SkewNode[T] | None, root2: SkewNode[T] | None) -> SkewNode[T] | None:
+    def merge(
+        root1: SkewNode[T] | None, root2: SkewNode[T] | None
+    ) -> SkewNode[T] | None:
         """
         Merge 2 nodes together.
         >>> SkewNode.merge(SkewNode(10),SkewNode(-10.5)).value
@@ -91,6 +93,7 @@ def merge(root1: SkewNode[T] | None, root2: SkewNode[T] | None) -> SkewNode[T] |
 
         return result
 
+
 class SkewHeap[T]:
     """
     A data structure that allows inserting a new value and to pop the smallest