Test the variables types in jinja2 templates, used here with ansible

jinja_variables_types.yml

---
- hosts: all
  gather_facts: no
  vars:
    string: "string"
    list:
      - item1
      - item2
    dict:
      key1: value1
      key2: value2
    object:
      k1: "string"
      k2: [ "item1", "item2" ]
      k3: { 'i1': 'v1', 'i2': 'v2' }
  tasks:
    - debug: msg="dict is mapping"
      when: dict is mapping
    - debug: msg="list is mapping"
      when: list is mapping
    - debug: msg="string is mapping"
      when: string is mapping
    - debug: msg="dict is sequence"
      when: dict is sequence
    - debug: msg="list is sequence"
      when: list is sequence
    - debug: msg="string is sequence"
      when: string is sequence
    - debug: msg="dict is iterable"
      when: dict is iterable
    - debug: msg="list is iterable"
      when: list is iterable
    - debug: msg="string is iterable"
      when: string is iterable
    - debug: msg="dict is string"
      when: dict is string
    - debug: msg="list is string"
      when: list is string
    - debug: msg="string is string"
      when: string is string
    - copy:
        dest: /tmp/variable.txt
        content: |
          {% for k,v in object.iteritems() %}
          {% if v is string %}string: {{ v }}
          {% elif v is mapping %}{% for j,l in v.iteritems() %}{{ j }}: {{ l }}\n{% endfor %}
          {% elif v is sequence %}{% for n in v %}- {{ n }}\n{% endfor %}
          {% else %}huh?
          {% endif %}
          {% endfor %}