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

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Author: pre-commit-ci[bot]

machine_learning/xgboostclassifier.py

@@ -6,7 +6,7 @@
 from xgboost import XGBClassifier
 
 
-def data_handling(data: list) -> tuple[int,str]:
+def data_handling(data: list) -> tuple[int, str]:
     # Split dataset into train and test data
     x = data["data"]  # features
     y = data["target"]