How to link two programs in Python?

There is a program in Python (python3) for linux
It periodically sends the text to standard output, running in an endless loop.
I have another program in Python and run it in interactive mode processed output
April 3rd 20 at 17:43
1 answer
April 3rd 20 at 17:45
If purely from stdout to work - then look towards linux pipes as an option

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