I wrote a python class that has some features and I want to make it a service to web users [on hold]

I wrote a class in python with features like:

• log in to our school's website
• fetch informations like school ID and Grade
• give email to user when there is important school news

Now I want to make a website for people to use my features.

I decide to use nodejs/php, how can I give a interface in my python script? In other words, how can I apply my python features in nodejs/php ?

I've thought of executing the *.py file in shell script. But I don't think it's a good way.