Access SharePoint via REST

I need a small, tidy solution that lets me pull content from our SharePoint-based intranet through its REST web services. The goal is strictly data retrieval—no updates or deletes—so that I can programmatically read a specific page inside a protected area of the site.

You’ll guide me through the full flow: authenticating, forming the correct endpoint for that single page, and returning the HTML (or JSON representation if that is easier) so it can be consumed by my own application. A lightweight proof-of-concept is all that’s required; language is flexible as long as the code is clear and uses standard libraries—Python requests, C# HttpClient, or similar are all fine.

Create a web page with three buttons or links.
When I click on one the three links/buttons.
The web page must do the following:
1. Login/authenticate into sharepoint
2. Access a given SharePoint-based intranet page(You must be able to show that this can be changed at runtime/ passed into sharepoint)
3. Display SharePoint-based intranet page in your web browser

Link/button 1 => show page 1
Link/button 2 => show page 2
Link/button 3 => show page 3

For each of the three SharePoint-based intranet pages. Have text page 1, page 2, page 3.

This task is to demonstrate that you can use the sharepoint rest services to be authenticate and then display a give intranet page

Deliverables:
• A working script or minimal project that logs in, calls the SharePoint REST endpoint, and retrieves the target page’s content.
• Brief, commented documentation showing the key steps (auth, headers, endpoint structure) so I can adapt it later.

Once I can run the code and see the page’s data in my console, the job is done.