split-up ansible-test role list

gistfile1.txt

        - hosts: localhost
          vars:
            split_in: 4
            do_number: 1 # 1 to 4
          tasks:
              - command: 'ansible-test integration --python 3.7 -vvv --list-targets zuul/vmware/vcenter_1esxi/'
                register: ansible_test_targets
              - set_fact:
                    number_entries: "{{ ansible_test_targets.stdout_lines|length }}"
              - set_fact:
                  start_at: "{{ number_entries|int // split_in * (do_number -1)|int }}"
                  end_at: "{{ (number_entries|int // split_in * (do_number |int)) }}"
         
              - debug:
                  msg: "Do roles: {{ ansible_test_targets.stdout_lines[start_at|int:end_at|int] }}"