Deprecate the import of some element classes in sage/ring/all.py

[DavidAyotte]

This tickets aims to remove some element classes from the global namespace. Example:

sage: PowerSeries?
Docstring:
   A power series. Base class of univariate and multivariate power
   series. The following methods are available with both types of
   objects.
Init docstring:
   Initialize a power series. Not for public use. It gets called by
   the "PowerSeries_poly" and "MPowerSeries" constructors.
[...]

CC: @tscrim

Component: refactoring

Author: David Ayotte

Branch/Commit: 10be916

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/33602

[DavidAyotte]

Branch: u/gh-DavidAyotte/power_series

[sagetrac-git]

Commit: 01609e7

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

01609e7

src/sage/rings/all.py: fix doctests output

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

5deb7c5

src/sage/rings/all.py: fix typo

[sagetrac-git]

Changed commit from 01609e7 to 5deb7c5

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

2818c1b

Fix failing doctests

[sagetrac-git]

Changed commit from 5deb7c5 to 2818c1b

[DavidAyotte]

comment:6

I fixed the two failing doctests in sage/rings/laurent_series_ring_element.pyx and sage/rings/power_series_ring_element.pyx however I don't think that the failed doctest in sage/interfaces/expect.py is related to this ticket.

[tscrim]

comment:7

That test from #23928 is not right. The parent is wrong for instance. I think we should correct it by

-             sage: R.<x> = PowerSeriesRing(QQ, implementation='pari')
-             sage: f = LaurentSeries(R, x).add_bigoh(7)
+             sage: R.<x> = LaurentSeriesRing(QQ, implementation='pari')
+             sage: f = x.add_bigoh(7)
              sage: f(x)

Everything else LGTM.

[sagetrac-git]

Changed commit from 2818c1b to 10be916

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

10be916

src/sage/rings/laurent_series_ring_element.pyx: fix an incorrect doctest

[tscrim]

comment:9

Thank you.

[tscrim]

Reviewer: Travis Scrimshaw

[vbraun]

Changed branch from u/gh-DavidAyotte/power_series to 10be916