Provide ascii_art and unicode_art for factorizations

[slel]

Suggested by Juan Nicolas Pardo Martin and Travis Scrimshaw:

• sage-devel, 2019-02, Proposal: Add ascii_art representation to factor

CC: @slel @tscrim @videlec @mwageringel @certik @isuruf

Component: factorization

Keywords: ascii_art, unicode_art, factorization

Issue created by migration from https://trac.sagemath.org/ticket/27377

[mkoeppe]

comment:3

We already use the SymPy unicode printer for printing symbolics.

There are some open SymPy issues in this direction:

• Use Unicode superscript numeric characters for exponents? sympy/sympy#19049
• pprint unicode does not format subscripts on Greek letters sympy/sympy#19005
• https://github.com/sympy/sympy/issues?q=is%3Aissue+is%3Aopen+unicode+label%3Aprinting.pretty

[mkoeppe]

comment:4

Also see numpy/numpy#15666

[tscrim]

comment:6

See also #30119.