[Python-ideas] Re: We should have an explicit concept of emptiness for collections

On Mon, Aug 23, 2021 at 01:51:17PM -0000, Thomas Grainger wrote:

In all seriousness this is an actual problem with numpy/pandas arrays where:

Indeed. Third-party classes can do anything they like. It is a shame that numpy's API made the decision that they did, but I don't think it is very common to use numpy arrays in a context where they are expected to duck-type as collections. -- Steve