'Initialises the SentimentEvent.
Parameters:
timestamp - The timestamp when the sentiment was generated.
ticker - The ticker symbol, e.g. \'GOOG\'.
sentiment - A string, float or integer value of "sentiment",
e.g. "bullish", -1, 5.4, etc.'

def __init__(self, timestamp, ticker, sentiment):

    self.type = EventType.SENTIMENT
    self.timestamp = timestamp
    self.ticker = ticker
    self.sentiment = sentiment
