Example sentiment predictor class

example_sentiment_class.py

class ExampleSentiment(Base):
    """Predict sentiment scores using using X classifier"""
    def __init__(self, model_file: str=None) -> None:
        super().__init__()   # Inherit methods from Base class

    def score(self, text: str) -> int:
        """Return a sentiment score on sample text, an integer in the range [1, 2, 3, 4, 5]"""
        # Apply some sentiment scoring technique here
        
    def predict(self, train_file: None, test_file: str, lower_case: bool) -> pd.DataFrame:
        """Return a Pandas DataFrame that applies the sentiment scoring method on each
           row of the test set
        """
        df = self.read_data(test_file, lower_case)
        df['pred'] = df['text'].apply(self.score)