class AbstractProcessor() :
def __init__(self,data) :
self.data = data
def run(self) :
pass
class MsgProcessor(AbstractProcessor) :
def __init__(self,data) :
super(MsgProcessor,self).__init__(data)
def run(self) :
print('The message is: ' + str(self.data))
class AskProcessor(AbstractProcessor) :
def __init__(self,data) :
super(AskProcessor,self).__init__(data)
def run(self) :
print('The question is: ' + str(self.data))
class Runner() :
def __init__(self,processor) :
self.processor = processor
def process(self) :
if self.processor :
self.processor.run()
def main(argv) :
try :
runner = None
if len(argv) > 1 :
if argv[0] == 'msg' :
# says 'the message is: <message>'
runner = Runner(MsgProcessor(argv[1]))
elif argv[0] == 'ask' :
# says 'the question is: <message>'
runner = Runner(AskProcessor(argv[1]))
if runner :
runner.process()
except Exception as e :
print('main: exception occurred ' + str(e))
if __name__ == '__main__' :
try :
argv = []
argv.append('msg')
argv.append('is this a message')
main(argv)
except (SystemExit,KeyboardInterrup) :
pass
