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Python timer
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| import time | |
| class Timer(object): | |
| def __init__(self, func=None): | |
| if func is None: | |
| func = time.perf_counter | |
| self._func = func | |
| self.reset() | |
| def start(self): | |
| if self._start is not None: | |
| raise RuntimeError('Already started') | |
| self._start = self._func() | |
| def stop(self): | |
| if self._start is None: | |
| raise RuntimeError('Not started') | |
| end = self._func() | |
| self.elapsed += end - self._start | |
| self._start = None | |
| def reset(self): | |
| self.elapsed = 0.0 | |
| self._start = None | |
| @proper | |
| def running(self): | |
| return self._start is not None | |
| def __enter__(self): | |
| self.start() | |
| return self | |
| def __exit__(self, *args): | |
| self.stop() |
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