Cartesian products indexed by a Family

[mkoeppe]

From CombinatorialFreeModule_CartesianProduct.__init__:

# TODO: generalize to a family or tuple

Depends on #31453

CC: @orlitzky @tscrim

Component: categories

Branch/Commit: u/mkoeppe/cartesian_products_indexed_by_a_family @ 92a3f84

Issue created by migration from https://trac.sagemath.org/ticket/31457

[mkoeppe]

comment:1

Sage development has entered the release candidate phase for 9.3. Setting a new milestone for this ticket based on a cursory review of ticket status, priority, and last modification date.

[mkoeppe]

Branch: u/mkoeppe/cartesian_products_indexed_by_a_family

[mkoeppe]

Commit: 92a3f84

[mkoeppe]

comment:7

Some test failures that I don't understand; and some test failures from changed reprs

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New commits:

92a3f84

Cartesian products: Make _sets a Family, eliminate _sets_keys