How to deploy heroku dyno with nodejs web app and Python script?

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Python

server

deployment

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So what I have is I'm using nodejs/express for website. I am also using another javascript module called spacy-js. To make spacy-js work, I have to run a python file in the spacy module like "python node_modules/spacy/api/server.py" in 1 terminal and then do "npm start" on another terminal so that spacy works on my website. Now, this website uses nodejs website and also runs a python file inside node_modules. How do I deploy this to heroku?

What I have tried:

I have absolutely no idea how to do this. I know how to deploy a regular javascript app, or a regular python app, but I have never done anything like this.