Could it be the placement of the 'please' in the example? I always include a 'please' when making a request, but I've also had similar thoughts about the mid-sentence 'please' in the past.

If you put it at the end it reads (to me, at least!) more like a polite request:

"Could you align these variable definitions so they're easier to read please?"

Are you genuinely asking the person if they will? If not, then you should drop the question mark.

There's a comment above that links to the repos for the source code, but it looks like it uses the python package Sumy to do the summaries.

https://pypi.python.org/pypi/sumy

cool, I will check it out.