How to make exceptions for parsing?

Question

Python

I made exceptions for the parser only on ConnectionError and it does not work well when I try to check it, it just returns emptiness and not the text that I would like to see.
Yes, and I need to make exceptions for the emptiness PS when the user did not enter anything and wanted to make another exception when there is no such product on the site,
The code where the site page is formed

import requests

url = 'http://www.gadget.kg/catalog/search?q='

class GadgetExtractor:

    def get_product_link(self, name_list: list) -> str: # создаю ссылку поисковика
        full_url = ''
        for arg in name_list:
            full_url += arg
            if arg != name_list[-1]:
                full_url += '+'
        product_link = url + full_url
        return product_link


    def get_html(self, url: str) -> str:
        try:
            res = requests.get(url=url)  # здесь беру html сайта
            res.raise_for_status()
            return res.text
        except requests.HTTPError as error:
            code = error.res.status_code
            print('Ошибка', code)
            exit()
        except ConnectionError:
            print('Плохой интернет')
            exit()

Where does site parsing take place?

from bs4 import BeautifulSoup

class GadgetTransform:

    def get_data(self,  html: str) -> list:
        soup = BeautifulSoup(html, 'html.parser')
        if soup.find('div', class_='empty-cart'):
            print(soup.find('div', class_='empty-cart').get_text())
            exit()
        items = soup.find_all('div', class_='hit__slide')
        phone = []
        for item in items:
            price = item.find('span', class_='hit__slide__price')
            if price:
                price = price.get_text()
            else:
                price = ''
            phone = [i for i in phone if i['cost'] != '']
            phone.append({
                'title': item.find("h6", class_='hit__slide__title').get_text(),
                'cost': price,
            })

        return phone

code where all functions are called

from sys import argv
from .transform import GadgetTransform
from .extractor import GadgetExtractor


def main():
    gadget_extractor = GadgetExtractor()
    product_link = gadget_extractor.get_product_link(name_list=argv[1:])
    product_page = gadget_extractor.get_html(url=product_link)

    gadget_transform = GadgetTransform()
    detal_of_product = gadget_transform.get_data(html=product_page)
    print(detal_of_product)

if __name__ == '__main__':
    main()