36 lines
807 B
Python
36 lines
807 B
Python
from time import time
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from .types import FloatOrNone
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class StopWatch:
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started: FloatOrNone = None
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stopped: FloatOrNone = None
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def __init__(self, auto_start=True):
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if auto_start:
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self.start()
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def start(self):
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self.started = time()
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self.stopped = None
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def stop(self) -> float:
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self.stopped = time()
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return self.elapsed()
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def elapsed(self) -> float:
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if self.stopped is None:
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return time() - self.started
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else:
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return self.stopped - self.started
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def __str__(self):
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units = ['s', 'ms', 'µs', 'ns']
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unit = 0
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elapsed = self.elapsed()
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while elapsed < 1:
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elapsed *= 1000
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unit += 1
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return "%1.2f%s" % (elapsed, units[unit])
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