Is it possible to restrict not more than 2 cards per member?

[Nandish Ajani]

I am looking for a way through which I can put the restriction of assigning not more than 2 cards per member? 

Also is it possible to restrict only one member per card? Like we do in Jira? 

[Iain Dooley · Accepted solution]

@Nandish Ajani you can do it through the API, here's a Trellinator function that will remove a member added to a card if more than one member exists after it has been added and posts a comment notifying the adding member that only one member is allowed:

https://gist.github.com/iaindooley/6ebdd1975319c4f5a165a0eca563a240

Here's a function that will remove a member from a card if they are a member of 2 or more cards already when added:

https://gist.github.com/iaindooley/398296f74e001383b2c66d8c3a2a9256

You can read more about Trellinator here:

https://community.atlassian.com/t5/Marketplace-Apps-Integrations/Introducing-Trellinator-Automate-Trello-with-Google-Apps-Script/ba-p/925271

[Nandish Ajani]

Thank you. 
As I am a Python Developer are you aware of any such resources in Python? Also, can we achieve this using the core API that is provided by trello? 
https://developers.trello.com/reference/

[Iain Dooley]

@Nandish Ajani I've only written Trellinator as a Google Apps Script framework, you're welcome to port it to Python if you want ;)

And yes it just uses the Trello API under the hood, so you can write the code to do this using Python hosted on a web server.