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Function function is one of the core contents of python programming and is also a relatively important one. The following article mainly introduces you to the relevant information about the implementation of calling functions at specified times in python. The article introduces it in great detail through sample code. Friends who need it can refer to it. Let’s take a look together.
Preface
This article mainly introduces to you the relevant content about calling functions at specified time in Python, and shares it for your reference and study. The following words Not much to say, let’s take a look at the detailed introduction:
In the previous article, you can use delayed calling. Here, the specified time is used to call the function
The example is as follows:
import asyncio import time def callback(n, loop): print('callback {} invoked at {}'.format(n, loop.time())) async def main(loop): now = loop.time() print('clock time: {}'.format(time.time())) print('loop time: {}'.format(now)) print('registering callbacks') loop.call_at(now + 0.2, callback, 1, loop) loop.call_at(now + 0.1, callback, 2, loop) loop.call_soon(callback, 3, loop) await asyncio.sleep(1) event_loop = asyncio.get_event_loop() try: print('entering event loop') event_loop.run_until_complete(main(event_loop)) finally: print('closing event loop') event_loop.close()
The result output is as follows:
entering event loop clock time: 1504688585.2024202 loop time: 5747.015 registering callbacks callback 3 invoked at 5747.031 callback 2 invoked at 5747.109 callback 1 invoked at 5747.218 closing event loop
In this example, call the function call_at()
to implement this function.
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