from __future__ import annotations (#2464)

* from __future__ import annotations

* fixup! from __future__ import annotations

* fixup! from __future__ import annotations

* fixup! Format Python code with psf/black push

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

searches/simple_binary_search.py

@@ -7,10 +7,10 @@ python3 -m doctest -v simple_binary_search.py
 For manual testing run:
 python3 simple_binary_search.py
 """
-from typing import List
+from __future__ import annotations
 
 
-def binary_search(a_list: List[int], item: int) -> bool:
+def binary_search(a_list: list[int], item: int) -> bool:
     """
     >>> test_list = [0, 1, 2, 8, 13, 17, 19, 32, 42]
     >>> print(binary_search(test_list, 3))