@abstractmethod
    def calculate_signals(self, event):
        raise NotImplementedError("Should implement calculate_signals()")
Parses a date and time from a string.
dataset/ETHPy150Open mhallsmoore/qstrader/strategy/strategy.py/Strategy.calculate_signals--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/webapp2-2.3/webapp2_extras/i18n.py/I18n.parse_datetime