reporting-engine/report_label/demo/demo.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

    <template id="label_template_partner_address" name="Partner Label: Address">
        <address
            t-field="record.self"
            t-options='{"widget": "contact", "fields": ["address", "name"], "no_marker": True}'
        />
    </template>

    <record id="report_paperformat_label_partner_address" model="report.paperformat.label">
        <field name="name">Partner Label</field>
        <field name="format">A4</field>
        <field name="label_height" eval="42.3"/>
        <field name="label_width"  eval="60"/>
        <field name="label_padding_top"    eval="5"/>
        <field name="label_padding_right"  eval="5"/>
        <field name="label_padding_bottom" eval="5"/>
        <field name="label_padding_left"   eval="5"/>
    </record>

    <record id="actions_server_label_partner_address" model="ir.actions.server">
        <field name="name">Print Address Labels</field>
        <field name="state">report_label</field>
        <field name="model_id" ref="base.model_res_partner"/>
        <field name="label_paperformat_id" ref="report_paperformat_label_partner_address"/>
        <field name="label_template">report_label.label_template_partner_address</field>
    </record>

    <!-- Create context action -->
    <function model="ir.actions.server" eval="[ref('actions_server_label_partner_address')]" name="create_action"/>

</odoo>