3 Dependency Injection ToDo
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class AbstractProcessor() :
def __init__(self,data) :
self.data = data
def run(self) :
pass
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 : <question>'
runner = Runner(AskProcessor(argv[1]))
runner.process()
except Exception as e :
print('main: exception occurred ' + str(e))
if __name__ == '__main__' :
try :
argv = []
argv.append('ask')
argv.append('is this a question')
main(argv)
except (SystemExit,KeyboardInterrup) :
pass
Python
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