Kanban view defined as A kanban view shows a set of cards possibly grouped in columns it is important for odoo module to describe xml functionality. For example you can see below code which is use in .xml file.

    <record model="ir.ui.view" id="view_openacad_session_kanban">
        <field name="name">openacad.session.kanban</field>
        <field name="model">openacademy.session</field>
        <field name="arch" type="xml">
            <kanban default_group_by="course_id">
                <field name="color"/>
                <templates>
                    <t t-name="kanban-box">
                        <div
                                t-attf-class="oe_kanban_color_{{kanban_getcolor(record.color.raw_value)}}
                                              oe_kanban_global_click_edit oe_semantic_html_override
                                              oe_kanban_card {{record.group_fancy==1 ? 'oe_kanban_card_fancy' : ''}}">
                            <div class="oe_dropdown_kanban">
                                <!-- dropdown menu -->
                                <div class="oe_dropdown_toggle">
                                    <i class="fa fa-bars fa-lg"/>
                                    <ul class="oe_dropdown_menu">
                                        <li>
                                            <a type="delete">Delete</a>
                                        </li>
                                        <li>
                                            <ul class="oe_kanban_colorpicker"
                                                data-field="color"/>
                                        </li>
                                    </ul>
                                </div>
                                <div class="oe_clear"></div>
                            </div>
                            <div t-attf-class="oe_kanban_content">
                                <!-- title -->
                                Session name:
                                <field name="name"/>
                                <br/>
                                Start date:
                                <field name="start_date"/>
                                <br/>
                                duration:
                                <field name="duration"/>
                            </div>
                        </div>
                    </t>
                </templates>
            </kanban>
        </field>
    </record>

    <record model="ir.actions.act_window" id="session_list_action">
        <field name="name">Sessions</field>
        <field name="res_model">openacademy.session</field>
        <field name="view_type">form</field>
        <field name="view_mode">tree,form,calendar,gantt,graph,kanban</field>
    </record>

    <menuitem id="session_menu" name="Sessions"
              parent="openacademy_menu"</pre>

Note-Add an integer color field to the Session model and add the kanban view and update the action.