My xml fileis:

<template id="payment_cart_shipping_column" inherit_id="website_sale.cart_lines" customize_show="True"
          name="Shipping option">
    <xpath expr="//table[@id='cart_products']/thead[1]/tr[1]/th[4]" position="after">
        <th class="text-center">Shipping</th>
    </xpath>
    <xpath expr="//table[@id='cart_products']/tbody[1]/t[1]/tr[1]/td[5]" position="after">
        <td class="text-center">
            <input class="form-control" type="checkbox" id="with_delivery"                    name="with_delivery" 
                   t-att-data-line-id="line.id" 
                   t-att-data-product-id="line.product_id.id"/>
        </td>
    </xpath>
</template>

My controller main is:
@http.route(['/shop/checkout'], type='http', auth="public", website=True, sitemap=False)
    def checkout(self, **post):
        # print the input with the id: "with_delivery"
        # update the 'with_delivery' attribute 
        res = super(myECommerce, self).checkout(**post)
        return res

I want to print the value of the input with the id "with_delivery"
can any one help me plz