<code class="language-python">#Context Manager and Contextlib, __enter__,__exit__
#Ex1
import time
class ExcuteTimer(object):
    def __init__(self,msg):
        self._msg=msg

    def __enter__(self):
        self._start=time.monotonic()
        return self._start
    
    def __exit__(self,exc_type,exc_value,exc_traceback):
        if exc_type:
            print("Logging exception {}".format((exc_type,exc_value,exc_traceback)))
        else:
            print("{} {} s".format(self._msg, time.monotonic()-self._start))
        return True

with ExcuteTimer('Start! job') as v:
    print('Received start monotonic1:{}'.format(v))
    for i in range(1000000):
        pass
    raise Exception('Raise! Exception!')





</code></pre>

<p>안녕하세요.</p><p>아래 답글 달았습니다.</p>

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