isort --profile black . (#2181)

* updating DIRECTORY.md

* isort --profile black .

* Black after

* updating DIRECTORY.md

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

machine_learning/knn_sklearn.py

@@ -1,5 +1,5 @@
-from sklearn.model_selection import train_test_split
 from sklearn.datasets import load_iris
+from sklearn.model_selection import train_test_split
 from sklearn.neighbors import KNeighborsClassifier
 
 # Load iris file