python async await
import asyncio
async def print_B(): #Simple async def
print("B")
async def main_def():
print("A")
await asyncio.gather(print_B())
print("C")
asyncio.run(main_def())
# The function you wait for must include async
# The function you use await must include async
# The function you use await must run by asyncio.run(THE_FUNC())async python
import asyncio
async def main():
print('Hello ...')
await asyncio.sleep(1)
print('... World!')
# Python 3.7+
asyncio.run(main())
# output
"""
Hello ...
...World!
"""
# with a 1 second wait time after Hello ...python async await
import asyncio
from PIL import Image
import urllib.request as urllib2
async def getPic(): #Proof of async def
pic = Image.open(urllib2.urlopen("https://c.files.bbci.co.uk/E9DF/production/_96317895_gettyimages-164067218.jpg"))
return pic
async def main_def():
print("A")
print("Must await before get pic0...")
pic0 = await asyncio.gather(getPic())
print(pic0)
asyncio.run(main_def())Copyright © 2021 Codeinu
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