new example

selectattr-filter.yaml

@@ -32,3 +32,12 @@
     vars:
       output: "{{ input|selectattr('system_name', 'equalto', system_name)|list }}"
       system_name: Say_Hello
+  - block:
+    - debug:
+        var: output
+    - assert:
+        that:
+        - output|length == 0
+    vars:
+      output: "{{ input|selectattr('system_name', 'equalto', system_name)|list }}"
+      system_name: missing

split.yaml

@@ -0,0 +1,21 @@
+- name: Split filter
+  hosts: localhost
+  gather_facts: no
+  tasks:
+  - block:
+    - debug:
+        var: output
+    - assert:
+        that:
+        - output | length == 4
+        - "output[1] | length == 4"
+    vars:
+      input:
+      - " Name       MAC address          Protocol     Address"
+      - "-------------------------------------------------------------------------------"
+      - " lo         00:00:00:00:00:00    ipv4         127.0.0.1/8"
+      - " lo         00:00:00:00:00:00    ipv6         ::1/128"
+      - " enp1s0     02:02:01:00:01:66    ipv4         192.168.1.195/24"
+      - " enp1s0     02:02:01:00:01:66    ipv6         fe80::7ef3:9a60:321:2091/64"
+      output: >
+        {{ input[2:] | map("split", None) | community.general.json_query('[*].{"ifname": [0], "mac": [1], "proto": [2], "address": [3]}') }}