Remove _pari_instance global

[jdemeyer]

The _pari_instance global in src/sage/libs/cypari2/pari_instance.pxd was introduced as temporary workaround. Ideally, it should not be needed.

Since many of the uses of pari_instance involve lists, I decided to create a new function cdef Gen list_of_Gens_to_Gen(list s) for fast conversion of a Python list of Gens to a Gen. This function is in turn called from objtogen.

CC: @defeo @videlec

Component: interfaces

Author: Jeroen Demeyer

Branch/Commit: 98869b4

Reviewer: Luca De Feo

Issue created by migration from https://trac.sagemath.org/ticket/22222

[jdemeyer]

Author: Jeroen Demeyer

[jdemeyer]

Dependencies: #22185

[jdemeyer]

Changed dependencies from #22185 to #22185, #22210

[jdemeyer]

Branch: u/jdemeyer/ticket/22222

[jdemeyer]

Commit: 2d82cf9

[jdemeyer]

New commits:

de81adc	Trac 22210: remove obsolete special case in PARI gen.eval()
7a35c89	Merge commit '6022cab1880d6f3820e0f028671ddd2983eae42b'; commit 'ee54f071a26c63821f475d2832c7bb1fbbdd7e95' into ticket/22183
235efd3	Rename PariInstance -> Pari
6f04aba	Remove unused imports from sage
c258dca	Rename gen -> Gen
0c4433c	Fix documentation
dbaf3b2	Merge remote-tracking branch 'trac/u/jdemeyer/ticket/22185' into HEAD
2d82cf9	Remove _pari_instance global

[jdemeyer]

Changed dependencies from #22185, #22210 to none

[sagetrac-git]

Changed commit from 2d82cf9 to 98869b4

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

98869b4

Remove _pari_instance global

[defeo]

Reviewer: Luca De Feo

[defeo]

comment:12

Good for me. I cannot reproduce the doctest timeout reported by patchbot.

Wondering about bernfrac, bernreal, and fibonacci. What is this L type in pari.desc?

[jdemeyer]

comment:13

L = C long

[vbraun]

Changed branch from u/jdemeyer/ticket/22222 to 98869b4