multiple instances of Partitions with side-parameters

[dkrenn]

If I generate two Partition-objects with some side-paramters I get different objects:

sage: A=Partitions(4, min_length=2)
sage: B=Partitions(4, min_length=2)
sage: id(A), id(B)
(116527952, 116528976)

But when I do the same without side-parameters I get the same object:

sage: A=Partitions(4)
sage: B=Partitions(4)
sage: id(A), id(B)   
(116529232, 116529232)

Both should behave in the same way (AFAIK, like the second example)

CC: @sagetrac-sage-combinat @nthiery

Component: combinatorics

Keywords: Partitions, id, multiple instances

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/14966

[tscrim]

comment:1

This is actually not a bug, but instead a consequence of the different classes needed to handle some inputs. In particular, we can't hash the arguments since sometimes they need [lambda] functions as input. Unfortunately I don't think we can work around this, so I'm thinking we should close this ticket as won't-fix.

[jdemeyer]

Reviewer: Travis Scrimshaw