Create an arbitrary number of DigitalOcean droplets with Ansible - automation

Question

I want to create an arbitrary number of droplets when I call a playbook with ansible.
For example:
I need to create 10 droplets running some python code.
$ ansible-playbook install_pyapp_commission_new.yml --extra-vars "number_of_droplets_to_create=10"
I tried using with_sequence: count = X but you can't apply it to roles, or inside tasks (as far as I know). My playbook looks something like this:
- name: Digital Ocean Provisioning
hosts: 127.0.0.1
gather_facts: false
connection: local
roles:
- { role: do_provision, do_droplet_number: "{{ number_of_droplets_to_create | default(01) }}" }
- name: Setting up application
gather_facts: true
user: root
hosts: do_instances
roles:
- { role: application, wait_time: 60 }
So I pass the input number of droplets to do_provision as do_droplet_number because atm I create one per run (this way I can run 10 in parallel from bash, each with a different number, thus achieving my goal, but it's a dirty solution).
I wanted to do something like this:
- name: Digital Ocean Provisioning
hosts: 127.0.0.1
gather_facts: false
connection: local
roles:
- { role: do_provision, do_droplet_number: "{{ item }}" }
with_sequence: count={{ number_of_droplets_to_create }}
But this is not valid.

Answer 1

This should work using loop instead of with_sequence.
It shifts the loop into the role, because playbooks can't include the 'when'.
The 'when' is needed to prevent a droplet from being created when do_droplet_number is 0.
playbook
- name: list hosts
hosts: all
gather_facts: false
vars:
thiscount: "{{ mycount | default('0') }}"
roles:
- { role: do-provision, do_droplet_number: "{{ thiscount }}" }
roles/do-provision/task/main.yml
- name: display number
debug:
msg: "mycount {{ item }}"
loop: "{{ range(0, do_droplet_number|int) |list }}"
when: thiscount > 0