Automating webscraping with Python without Selenium

I am beginner in Python , I need to fetch data for list of codes from website :
https://www.isindb.com/fix-cusip-calculate-cusip-check-digit/
Under Enter Cusip , enter data from list of codes , and then click on Fix and check for result.

I want to automate this using Python but not with Selenium as it would be slow.

I would like to know is this task possible without Selenium. and if possible how should I approach.

>Solution :

you can use:

urllib3 and BeautifulSoup
Visit https://urllib3.readthedocs.io/

or

mechanicalsoup
Visit https://mechanicalsoup.readthedocs.io/en/stable/tutorial.html