Various files in sage/interfaces/ have this pattern:

class Octave(...):
    ....

octave = Octave()

When combined with from .octave import Octave, octave in sage/interfaces/all.py, this means that an instance of Octave is created when Sage starts up. I think we should avoid this with lazy imports.

Depends on #16522

Component: interfaces

Author: John Palmieri

Branch: 09f5d92

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/34547