style: format code with Autopep8, Black, ClangFormat, dotnet-format, …

…Go fmt, Gofumpt, Google Java Format, isort, Ktlint, PHP CS Fixer, Prettier, RuboCop, Ruff Formatter, Rustfmt, Scalafmt, StandardJS, StandardRB, swift-format and Yapf

This commit fixes the style issues introduced in 5e79cd2 according to the output
from Autopep8, Black, ClangFormat, dotnet-format, Go fmt, Gofumpt, Google Java
Format, isort, Ktlint, PHP CS Fixer, Prettier, RuboCop, Ruff Formatter, Rustfmt,
Scalafmt, StandardJS, StandardRB, swift-format and Yapf.

Details: None

fraud_detection/fraud_detection_model.py

@@ -3,14 +3,17 @@
 from sklearn.ensemble import RandomForestClassifier
 from sklearn.model_selection import train_test_split
 
+
 class FraudDetectionModel:
     def __init__(self, data):
         self.data = data
-        self.X = self.data.drop('fraudulent', axis=1)
-        self.y = self.data['fraudulent']
+        self.X = self.data.drop("fraudulent", axis=1)
+        self.y = self.data["fraudulent"]
 
     def train_model(self):
-        X_train, X_test, y_train, y_test = train_test_split(self.X, self.y, test_size=0.2, random_state=42)
+        X_train, X_test, y_train, y_test = train_test_split(
+            self.X, self.y, test_size=0.2, random_state=42
+        )
         self.model = RandomForestClassifier(n_estimators=100, random_state=42)
         self.model.fit(X_train, y_train)