Am 06.11.19 um 03:59 schrieb Dennis Lee Bieber:
On Tue, 5 Nov 2019 10:33:20 -0800 (PST), Spencer Du
<spence...@hotmail.co.uk> declaimed the following:
Hi
I want to execute at least two python files at once when imported but I dont
know how to do this. Currently I can only import each file one after another
but what i want is each file to be imported at the same time. Can you help me
write the code for this? embedded.py is the main file to execute.
Short answer: you don't.
When you import a module, the code for that module is parsed and
anything that is module level executable statement is done (note: "def" is
an executable statement -- it creates a function object contained the
parsed body and binds it to the provided name). When the parser gets to the
end of the module, it returns to the parent level and the next statement is
executed.
Unless you use 1) threads; 2) subprocesses; or 3) multiprocess a Python
program only has one line of control, and that control is sequential.
Since some of these example programs use asyncio, there is a 4th method.
You convert all the programs to use asyncio, remove the event loop from
these programs, i.e. remove the
asyncio.get_event_loop().run_until_complete(main())
from the individual programs, and then you run a single event loop in
your main program. Something like
loop = asyncio.get_event_loop()
loop.run_until_complete(asyncio.gather(laserembeded.main(),
camerasembedded.main()))
Christian
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