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try:

import uasyncio as asyncio

except ImportError:

try:

import asyncio

except ImportError:

print("SKIP")

raise SystemExit

try:

import utime

ticks = utime.ticks_ms

ticks_diff = utime.ticks_diff

except:

import time

ticks = lambda: int(time.time() * 1000)

ticks_diff = lambda t1, t0: t1 - t0

async def delay_print(t, s):

await asyncio.sleep(t)

print(s)

async def main():

print("start")

await asyncio.sleep(0.001)

print("after sleep")

t0 = ticks()

await delay_print(0.2, "short")

t1 = ticks()

await delay_print(0.4, "long")

t2 = ticks()

await delay_print(-1, "negative")

t3 = ticks()

print(

"took {} {} {}".format(

round(ticks_diff(t1, t0), -2),

round(ticks_diff(t2, t1), -2),

round(ticks_diff(t3, t2), -2),

)

)

asyncio.run(main())