If you want to create dynamic view in Odoo-9 me have to move on .xml file and In dynamic view we can manage view from xml.file in Odoo module, for example you can see below code .

<record model="ir.ui.view" id="session_tree"> 
            <field name="name">session tree</field> 
            <field name="model">session</field> 
            <field name="arch" type="xml"> 
                <tree string="Session"> 
                    <field name="name"> 
                    <field name="start_date"> 
                    <field name="duration"> 
                    <field name="seat"> 
                    <field name="attendee1"> 
                    <field name="instructor"> 
                    <field name="course"> 
                </field></field></field></field></field></field></field></tree> 
            </field> 
    </record> 




        <record id="action_courses" model="ir.actions.act_window"> 
                    <field name="name">Courses</field> 
                    <field name="type">ir.actions.act_window</field> 
                    <field name="res_model">course</field> 
                    <field name="view_type">form</field> 
                    <field name="view_id" ref="course_tree"> 
                    <field name="view_mode">tree,form</field> 
        </field></record>            


             <record id="action_attendee" model="ir.actions.act_window"> 
                    <field name="name">Attendee</field> 
                    <field name="type">ir.actions.act_window</field> 
                    <field name="res_model">attendee</field> 
                    <field name="view_type">form</field> 
                    <field name="view_id" ref="attendee_tree"> 
                    <field name="view_mode">tree,form</field> 
         </field></record> 



            <record id="action_session" model="ir.actions.act_window"> 
                    <field name="name">Session</field> 
                    <field name="type">ir.actions.act_window</field> 
                    <field name="res_model">session</field> 
                    <field name="view_type">form</field> 
                    <field name="view_id" ref="session_tree"> 
                    <field name="view_mode">tree,form</field> 
         </field></record> 


            <menuitem id="menu_course_main" name="Academy"> 
            <menuitem id="menu_course_main2" parent="menu_course_main" name="Academy"> 
            <menuitem id="menu_course_child1" parent="menu_course_main2" name="Courses" action="action_courses">                       
            <menuitem id="menu_attendee_child1" parent="menu_course_main2" name="Attendee" action="action_attendee"> 
            <menuitem id="menu_session_child1" parent="menu_course_main2" name="Session" action="action_session"> 



</menuitem></menuitem></menuitem></menuitem></menuitem>

Note-> With the help of this code we can easly manage .xml file in dynamic view.