Consolidate lesson-wide learning objectives

[chennesy]

How could the content be improved?

Via Lab review:

The learning objectives for the lesson as a whole are lengthy - it may be worth considering grouping these for the purpose of the lesson, to demonstrate to learners the overall expectations for learning as a whole, and then relying on the more specific objectives for each of the episodes.

Which part of the content does your suggestion apply to?

https://librarycarpentry.github.io/lc-python-intro/#learning-objectives