setTimer.py

class setTimer(object):

    def __init__(self, say, keyword):
        self.say = say
        self.keyword = keyword
    
    def to_number(self, number_string):
        number = {'one':1,
                    'two':2,
                    'three':3,
                    'four':4,
                    'five':5,
                    'six':6,
                    'seven':7,
                    'eight':8,
                    'nine':9,
                    'ten':10,
                    'eleven':11,
                    'twelve':12,
                    'thirteen':13,
                    'fourteen':14,
                    'fifteen':15,
                    'sixteen':16,
                    'seventeen':17,
                    'eighteen':18,
                    'nineteen':19,
                    'twenty':20,
                    }
        return number[number_string]

    def run(self, voice_command):
        
        command = voice_command.replace(self.keyword, '', 1)
        logging.info("received timer set command " + command )
        length, unit = command.split(' ')

        try:
            length = float(length)
        except (ValueError):
            length = float(self.to_number(length))
            
        if (unit == "minutes") or (unit == "minute"):
            length = length * 60
        logging.info("setting a timer for " + str(length) )
        self.say("setting a timer for " + str(length) + " seconds")
        t = threading.Timer(length, self.say, ["Time is up"]).start()