IntVect: eq list

[ax3l]

I would like to do things like:

>       assert mfab.nGrowVect == [2, 2, 2]

Which needs to implement more overloads to IntVect's __eq__() it seems:

E       TypeError: __eq__(): incompatible function arguments. The following argument types are supported:
E           1. (self: amrex.amrex_pybind.IntVect, arg0: int) -> bool
E           2. (self: amrex.amrex_pybind.IntVect, arg0: amrex.amrex_pybind.IntVect) -> bool
E       
E       Invoked with: <amrex.IntVect (2,2,2)>, [2, 2, 2]

[ax3l]

cc @RTSandberg or @n01r maybe?

Refs.:

• https://stackoverflow.com/a/67049242/2719194
• py::is_operator: https://pybind11.readthedocs.io/en/stable/advanced/classes.html#operator-overloading
• https://github.com/lsst-dm/dm_dev_guide/blob/main/pybind11/how-to.rst#wrapping-operators

[ax3l]

This could help: implicit conversion

• https://pybind11.readthedocs.io/en/stable/advanced/classes.html?highlight=singleton#implicit-conversions

Same for the amrex::Vector classes and RealVect as we saw in the hackathon w/ @RevathiJambunathan @EZoni