[Python] Extracting text from a specific Powerpoint slide, without relying on slide order

I would like to be able to extract text from a specific slide of a .ppt file from Python, without knowing anything about slide order.

Hence, there are two steps:

1. How do I add an identifying feature to a specific slide (like adding a name to a range in Excel)?
2. How to I access the slide by that identifying feature in Python?

Preferably, the answer to (i) should not be something visible on the slide (ie. just like a range's name in Excel is not visible in the cells themselves).

Below is an approximation of the form which the eventual answer to (ii) should take:

from pptx import Presentation

presentation = Presentation(<path to .ppt file>)

slide = <enter method of retrieving the slide with the identifying characteristic from (i)>

for shape in slide.shapes:
<do something with shapes on the slide you have identified>


Any thoughts would be welcome - many thanks!

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