sage.geometry.polyhedron: More lazy imports

[mkoeppe]

(from gh-kliem at #27366 comment:51)

Apparently sage.geometry.polyhedron.base is a startup module, which is terrible. We add lazy imports at two all.py files to fix this:

• sage/schemes/toric/all.py
• sage/geometry/all

Note some modules are not startup modules anymore as desired. In particular sage.geometry.cones is not a startup-modules anymore.

CC: @kliem @tscrim @videlec @nbruin

Component: geometry

Keywords: lazy import, startup

Author: Jonathan Kliem

Branch/Commit: 2b886a3

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/31705

[kliem]

Author: Jonathan Kliem

[kliem]

Changed keywords from none to lazy import, startup

[kliem]

Branch: public/31705

[kliem]

Commit: 2b886a3

[kliem]

comment:1

Do I need a deprecation warning that something as sage.geometry.cone won't work anymore without prior loading?

---

New commits:

2b886a3

do not import sage.geometry.polyhedron.base at startup

[tscrim]

comment:3

LGTM.

[tscrim]

Reviewer: Travis Scrimshaw

[kliem]

comment:4

Thank you.

[vbraun]

Changed branch from public/31705 to 2b886a3