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import asyncio
import time
import pyinstrument
def do_nothing():
pass
def busy_wait(duration):
end_time = time.time() + duration
while time.time() < end_time:
do_nothing()
async def say(what, when, profile=False):
if profile:
p = pyinstrument.Profiler()
p.start()
else:
p = None
busy_wait(0.1)
sleep_start = time.time()
await asyncio.sleep(when)
print(f"slept for {time.time() - sleep_start:.3f} seconds")
busy_wait(0.1)
print(what)
if p:
p.stop()
p.print(show_all=True)
loop = asyncio.get_event_loop()
loop.create_task(say("first hello", 2, profile=True))
loop.create_task(say("second hello", 1, profile=True))
loop.create_task(say("third hello", 3, profile=True))
loop.run_forever()
loop.close()
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