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

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

bit_manipulation/scale_list.py

@@ -4,6 +4,7 @@
 This function multiplies every element of the input list by a given factor.
 """
 
+
 def scale_list(numbers: list, factor: float) -> list:
     """
     Scale each number in the list by a given factor.

bit_manipulation/test_scale_list.py

@@ -1,11 +1,13 @@
 import unittest
 from bit_manipulation.scale_list import scale_list
 
+
 class TestScaleList(unittest.TestCase):
     def test_scaling(self):
         self.assertEqual(scale_list([1, 2, 3], 2), [2, 4, 6])
         self.assertEqual(scale_list([-1, -2], 3), [-3, -6])
         self.assertEqual(scale_list([0, 1], 0), [0, 0])
 
+
 if __name__ == "__main__":
     unittest.main()