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

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Author: pre-commit-ci[bot]

maths/transforms/fourier_transform.py

@@ -1,6 +1,7 @@
 from typing import List, Union
 import numpy as np
 
+
 def fourier_transform(signal: list[int | float]) -> list[complex]:
     """
     Compute the discrete Fourier transform (DFT) of a signal.
@@ -28,6 +29,7 @@ def fourier_transform(signal: list[int | float]) -> list[complex]:
         result.append(summation)
     return result
 
+
 if __name__ == "__main__":
     sample_signal = [1, 2, 3, 4]
     result = fourier_transform(sample_signal)