Absolute import when importing string

[jdemeyer]

A few Sage modules import the Python module string. Since this name is so generic, it might conflict with submodules inside Sage (this happened in #24222). So it's better to use from future import absolute_import.

Component: misc

Author: Jeroen Demeyer

Branch/Commit: 55a76ce

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/24242

[jdemeyer]

Branch: u/jdemeyer/absolute_import_when_importing_string

[jdemeyer]

Commit: 55a76ce

[jdemeyer]

New commits:

55a76ce

Add absolute_import in a few places

[tscrim]

Reviewer: Travis Scrimshaw

[tscrim]

comment:3

LGTM.

[embray]

comment:4

I thought at some point we had agreed to just put from future import absolute_import in every module. It is much better anyways than the old import semantics.

[vbraun]

Changed branch from u/jdemeyer/absolute_import_when_importing_string to 55a76ce