find agent by id

[Yilin Huang]

Hi all,

I am new to Mesa.

I would like to find agent reference by unique_id. is it possible to do this in Mesa without managing the references myself?

Many thanks in advance.

Yilin

[Conor Artman]

Hi Yilin,

If you're just getting started, please take a look at this repo's walkthrough for using MESA for fast ABM prototyping and modeling: https://github.com/cma43/Open-ABM/blob/master/Introductory%20Walkthrough/oabm_intro_walkthrough.ipynb

As for your question, generally an instance of an agent will have at least a private attribute called _unique_id, but in MESA's walkthroughs you'll see that it's not hard to construct an agent with a unique_id attribute.

Thanks,

Conor

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Conor Artman

[Yilin Huang]

Hi Cornor,  thank you for your reply. The problem is not to construct an agent with unique_id, but to find back the agent reference with the information of its unique_id. I see there is an agent list in the Mesa scheduler. I was just wondering if there is an easier way than to go through the list or create a dict for that. After I posted my question, I did find an earlier thread that discussed this very issue though. The answer is: I do need to create my own dict to do that. Thanks for your answer anyway.

[Tom Pike]

Yilin: If I am understanding correctly you want to retrieve the agent by its unique_id, correct?

 

The agent scheduler in  mesa.time is an Ordered Dictionary. so you can retrive the agent object by calling ``` <model.scheduler>._agents[<unique_id>]```, that will return the agent object.  

 

Tom Pike

 

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[Yilin Huang]

Exactly what I needed. Thanks Tom!

Best,

Yilin