- name: asdf
  hosts: localhost
  tasks:
  - name: Set fact to empty
    set_fact:
      directories: ''

  - name: Store a directory listing with file globbing
    find:
      paths: ./test_dir/
      file_type: directory
      recurse: no
    register: directories_tmp

  - name: something
    set_fact:
      directories: "{{ directories_tmp.files | map(attribute='path') | map('basename') | list }}"

  - name: List directories
    debug:
      msg: "{{ directories }}"