input: Write a function to create a web scraper that extracts specific data from a given website using the BeautifulSoup package. The function should take a URL as an input and return the extracted data. If no data is found, return an empty list.
  assert web_scraper("<url_of_webpage>")==['<data_1>', '<data_2>']
  assert web_scraper("<url_of_another_webpage>")==[]
output: def web_scraper(url):
      from bs4 import BeautifulSoup
      import requests
      try:
          response = requests.get(url)
          response.raise_for_status()
          soup = BeautifulSoup(response.text, 'html.parser')
          data = soup.find_all('some_tag')  # Replace 'some_tag' with the actual tag you want to extract
          return [item.text for item in data]
      except:
          return []