def bench_scikit_tree_classifier(X, Y):
    """Benchmark with scikit-learn decision tree classifier"""

    from sklearn.tree import DecisionTreeClassifier

    gc.collect()

    # start time
    tstart = datetime.now()
    clf = DecisionTreeClassifier()
    clf.fit(X, Y).predict(X)
    delta = (tstart - datetime.now())
    # stop time

    scikit_classifier_results.append(
        delta.seconds + delta.microseconds / mu_second)
dataset/ETHPy150Open scikit-learn/scikit-learn/benchmarks/bench_tree.py/bench_scikit_tree_classifier/swapped operands of `-`