I need to web scraping data from a website that uses frames

Please, I want you to give me some orientation about a project, cause I'm lost and really dunno where to start.

I'm pretty newbie at Python, but I've already did a web scraping script to get some information from some websites, using lxml and xpath to get data trough the HTML DOM.

But now, the client presented to me a challenge...

This website is using frames where I have to get data =( And I don't know how to handle with that...

And to complicate even more, the site requires login :(

If someone could help me with some information, like where do I have to start?

Is it possible to get data from a website that shows data into frames?

Here's the web address: https://www.bulkshared.com/online-ordering

I want to point the script to the "Pantry" section, but the url don't shows the path =(

Do you recommend me which kind of script? I want to use Python, but do I have to use BS? Xpath? Selenium?

Could someone donate a little portion of your time to try to help me?

Thank you very much for your time, guys!