Splitting in Jinja2/Ansible

test_split_jinja_ansible.yml

---
- name: Test split
  hosts: localhost
  gather_facts: false
  vars:
    - facter_blockdevices: "sda,sdb,sdc,sdd,sde,sdf"
  tasks:
    - name: Let's split
      debug: var=item
      with_items: "facter_blockdevices.split(',')"

@Constantin07, use {{ item | basename }}.

This didnt work me, but

---
- name: Test split
  hosts: localhost
  gather_facts: false
  vars:
    - facter_blockdevices: "sda,sdb,sdc,sdd,sde,sdf"
  tasks:
    - name: Let's split
      debug: var=item
      with_items: "{{ facter_blockdevices.split(',') }}"

does:

ansible-playbook mytest.yml 

PLAY [Test split] *****************************************************************************************************************************

TASK [Let's split] ****************************************************************************************************************************
ok: [localhost] => (item=sda) => {
    "item": "sda"
}
ok: [localhost] => (item=sdb) => {
    "item": "sdb"
}
ok: [localhost] => (item=sdc) => {
    "item": "sdc"
}
ok: [localhost] => (item=sdd) => {
    "item": "sdd"
}
ok: [localhost] => (item=sde) => {
    "item": "sde"
}
ok: [localhost] => (item=sdf) => {
    "item": "sdf"
}

PLAY RECAP ************************************************************************************************************************************
localhost                  : ok=1    changed=0    unreachable=0    failed=0   

I get the following output when i try this. Please help.

TASK [Let's split] ************************************************************************************************************************************************************
ok: [localhost] => (item=None) => {}
ok: [localhost] => (item=None) => {}
ok: [localhost] => (item=None) => {}
ok: [localhost] => (item=None) => {}
ok: [localhost] => (item=None) => {}
ok: [localhost] => (item=None) => {}