[LC] fix: line lint

Author: HaJunYoo

construct-binary-tree-from-preorder-and-inorder-traversal/hajunyoo.py

@@ -20,4 +20,4 @@ def buildTree(self, preorder: List[int], inorder: List[int]) -> Optional[TreeNod
         left = self.buildTree(preorder, inorder[:mid])
         right = self.buildTree(preorder, inorder[mid + 1:])
 
-        return TreeNode(val, left, right)
+        return TreeNode(val, left, right)

counting-bits/hajunyoo.py

@@ -31,4 +31,4 @@ def countBits(self, n: int) -> List[int]:
             if i == msb * 2:
                 msb *= 2
             res[i] = res[i - msb] + 1
-        return res
+        return res

encode-and-decode-strings/hajunyoo.py

@@ -28,4 +28,4 @@ def decode(self, str):
             length = int(str[i:colon])
             res.append(str[colon + 1:colon + 1 + length])
             i = colon + 1 + length
-        return res
+        return res