Code-Snippets-Functions/Execute a function on a child site/WooCommerce/display-message-if-cart-item-has-quantity-of-one.txt

add_action( 'woocommerce_before_cart_contents', 'display_notice_based_on_item_quantity' );
function display_notice_based_on_item_quantity() {
    foreach ( WC()->cart->get_cart() as $cart_item ) {    
            if ( $cart_item['quantity'] == 1 )
            {
             $terms = get_the_terms( $cart_item['product_id'], 'product_cat' );
             foreach ( $terms as $term )
                {
                if ($term->slug == 'your-category-slug')
                    continue 2;
                }
                if ( is_cart() )
                    echo '<div class="cart-qty-notice">';
                    printf( __("Message goes here", "woocommerce"));
                    echo '</div>';
                break;
            }
       }
    }