bpo-33869: Add link to list definition in Glossary list entry

[andresdelfino]

https://bugs.python.org/issue33869

[pablogsal]

Question: Although it would be handy for newcomers to know some usages of a set, should this be considered part of the definition?

I am refering to this part:

eases duplicate removal and computation of mathematical operations such as intersection and difference.

[andresdelfino]

That's a pretty good question, actually. It's hard to understand what actually is expected from a set type (not the specific set class) from the docs, as it's mostly mixed with set (class) and frozenset:

https://docs.python.org/3/library/stdtypes.html#set-types-set-frozenset

Perhaps this is something I should ask on python-dev ?

[willingc]

Thanks folks. Perhaps reorganizing a bit would help:

An unordered collection of distinct :term:`hashable` objects that were introduced in :pep:`218`.

Python provides two built-in set types: set (a :term:`mutable` type), and frozen set (an :term:`immutable` type). See :ref:`types-set`.

[andresdelfino]

Because of Raymon's comment on the BPO issue, I modified the PR substantially, to the point that it only adds a link, actually 😅

[rhettinger]

I don't see think typesseq link target as being particularly useful.

[willingc]

Though we didn't accept this PR, thanks for the PR @andresdelfino. I agree with @rhettinger on this particular change.

@andresdelfino You've been contributing for a while now 😄 It would be great to have you working on meatier doc issues if you would like.