Ansible - set variable based on other item in list

I have configured this list as a variable:

my_list:
  - name: whatever
    url: http://example.com
  - name: dummy
    url: http://example.com

Can I configure a variable based on a name in my_list? Something I've tried, but fails because the variable doesn't loop over the list:

other_list:
  - a_name: "{{ ip_list.name if my_list.name == 'whatever' }}"
    a_url: "{{ ip_list.url if my_list.name == 'whatever' }}"

The expected outcome would be:

other_list:
  - a_name: whatever
    a_url: http://example.com

I don't want to run Ansible to set the variable during runtime, but I'd rather configure these variable in the variable files.