Get rid of the Union (#6246)

* Get rid of the Union

* updating DIRECTORY.md

* Get rid of the Union

* Remove the redundant pre-commit runs.

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

.github/workflows/pre-commit.yml

@@ -1,6 +1,10 @@
 name: pre-commit
 
-on: [push, pull_request]
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
 
 jobs:
   pre-commit:

DIRECTORY.md

@@ -444,6 +444,7 @@
   * [Scoring Functions](machine_learning/scoring_functions.py)
   * [Sequential Minimum Optimization](machine_learning/sequential_minimum_optimization.py)
   * [Similarity Search](machine_learning/similarity_search.py)
+  * [Support Vector Machines](machine_learning/support_vector_machines.py)
   * [Word Frequency Functions](machine_learning/word_frequency_functions.py)
 
 ## Maths

project_euler/problem_101/sol1.py

@@ -44,9 +44,8 @@ Find the sum of FITs for the BOPs.
 from __future__ import annotations
 
 from collections.abc import Callable
-from typing import Union
 
-Matrix = list[list[Union[float, int]]]
+Matrix = list[list[float | int]]
 
 
 def solve(matrix: Matrix, vector: Matrix) -> Matrix: