cell.agents is prone to create bugs

[quaquel]

In the new discrete spaces, you can easily access the agents in a given cell, via cell.agents. However, if you modify this list by, e.g., removing agents from it, you mess up everything because you are modifying which agents reside in which cell. The obvious solution is that cell.agent should return a copy of the list of agents, rather than the actual list. This removes the potential for side effects.

[Sahil-Chhoker]

Why was cell.agents not made into a property?

[quaquel]

That is indeed the solution I am thinking of (and update add_agent and remove_agent). I'll put in a PR later today.

why was it not done before? because you typically discover this stuff while using it again after not having used it a few weeks.