call_soon，即刻执行
1 #!/usr/bin/env python
2 # -*- coding:utf-8 -*-
3 import asyncio
4
5
6 def callback(sleep_times):
7 print('sleep {} success'.format(sleep_times))
8
9
10 def stop_loop(loop):
11 loop.stop()
12
13
14 if __name__ == '__main__':
15 loop = asyncio.get_event_loop()
16 # 即刻执行
17 loop.call_soon(callback, 2)
18 loop.call_soon(stop_loop, loop)
19 loop.run_forever()
sleep 2 success Process finished with exit code 0
call_later，指定时间之后再运行，执行的顺序和指定的时间有关，cal_soon比call_later优先执行
1 #!/usr/bin/env python
2 # -*- coding:utf-8 -*-
3 import asyncio
4
5
6 def callback(sleep_times):
7 print('sleep {} success'.format(sleep_times))
8
9
10 def stop_loop(loop):
11 loop.stop()
12
13
14 if __name__ == '__main__':
15 loop = asyncio.get_event_loop()
16 # 指定时间之后再运行
17 loop.call_later(1, callback, 1)
18 loop.call_later(2, callback, 2)
19 loop.call_later(3, callback, 3)
20 # loop.call_soon(stop_loop, loop)
21 loop.run_forever()
sleep 1 success sleep 2 success sleep 3 success
call_at，也是指定时间之后再执行，但是这个时间时loop里面的时间
1 #!/usr/bin/env python
2 # -*- coding:utf-8 -*-
3 import asyncio
4
5
6 def callback(sleep_times, loop):
7 print('sleep {} success, loop time {} '.format(sleep_times, loop.time()))
8
9
10 def stop_loop(loop):
11 loop.stop()
12
13
14 if __name__ == '__main__':
15 loop = asyncio.get_event_loop()
16 now = loop.time()
17 # 指定时间之后再运行
18 loop.call_at(now+1, callback, 1, loop)
19 loop.call_at(now+2, callback, 2, loop)
20 loop.call_at(now+3, callback, 3, loop)
21 # loop.call_soon(stop_loop, loop)
22 loop.run_forever()
sleep 1 success, loop time 2861146.171 sleep 2 success, loop time 2861147.171 sleep 3 success, loop time 2861148.171