doc, bat, cmd, Python call nodejs and pass parameters

There are so many benefits of doc if you have time to learn it, after all, not much.

After learning doc, nodejs, and Python, we
now need to call each other between each language. There are a total of 12 combinations of each other.

The doc file will be integrated in the file bat, hereafter collectively referred to as bat

bat calls Python
bat calls nodejs
bat calls Python (with parameters)
bat calls nodejs (with parameters)

python calls bat
python calls nodejs
python calls bat (with parameters)
python calls nodejs (with parameters)

nodejs calls bat
nodejs calls python
nodejs calls bat (with parameters)
nodejs calls python (with parameters)

First, let’s take a look at "redirect", "standard input", "standard output"

I won't go into it here, just learn by yourself if you want to know.
I just talk about standard input and output?