Python Taskbook Level 8.2

Given some URL:

pythonurl = 'http://test.com/dir1/dir2/dir3/page.html';

Get the page name from it:

python'page.html';

Given a list, the sublists of which contain numbers:

python[
  [1, 2, 3],
  [4, 5, 6],
  [7, 8, 9],
]

Merge the elements of this list into numbers:

python[123, 456, 789]

Display the following pyramid on the screen: