Ruff pandas vet (#10281)

* Python linting: Add ruff rules for Pandas-vet and Pytest-style

* updating DIRECTORY.md

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

strings/knuth_morris_pratt.py

@@ -71,7 +71,8 @@ if __name__ == "__main__":
     pattern = "abc1abc12"
     text1 = "alskfjaldsabc1abc1abc12k23adsfabcabc"
     text2 = "alskfjaldsk23adsfabcabc"
-    assert knuth_morris_pratt(text1, pattern) and knuth_morris_pratt(text2, pattern)
+    assert knuth_morris_pratt(text1, pattern)
+    assert knuth_morris_pratt(text2, pattern)
 
     # Test 2)
     pattern = "ABABX"

strings/rabin_karp.py

@@ -60,7 +60,8 @@ def test_rabin_karp() -> None:
     pattern = "abc1abc12"
     text1 = "alskfjaldsabc1abc1abc12k23adsfabcabc"
     text2 = "alskfjaldsk23adsfabcabc"
-    assert rabin_karp(pattern, text1) and not rabin_karp(pattern, text2)
+    assert rabin_karp(pattern, text1)
+    assert not rabin_karp(pattern, text2)
 
     # Test 2)
     pattern = "ABABX"