def train(df, features, cls):
    """
    Run training pipeline

    Params:
        df: (DataFrame) training data
        features: (List) List of column names to take from dataframe
        cls: (Object) Sklearn classifier to train 
    """
    X_train = df[features].values
    y_train = df.label.values
    cls.fit(X_train,y_train)
    return cls