input: Write a function to create a web scraper using Python's Selenium that retrieves data from an online store. The function should initialize a Selenium webdriver, navigate to the specified URL, perform a search for a keyword, and print the names of the products that match the search query.
  assert web_scraper("https://www.example.com/", "shoes")==None
  assert web_scraper("https://www.sample-store.com/", "t-shirts")==None
  assert web_scraper("https://www.test-shop.com/", "books")==None
  assert web_scraper("https://www.demo-store.com/", "laptops")==None
  assert web_scraper("https://www.example-shop.com/", "phones")==None
output: def web_scraper(url, keyword):
      from selenium import webdriver
      from selenium.webdriver.common.by import By
      from selenium.webdriver.common.keys import Keys
      import time
  
      driver = webdriver.Chrome()
      driver.get(url)
      
      search_box = driver.find_element(By.NAME, "q")
      search_box.send_keys(keyword)
      search_box.send_keys(Keys.RETURN)
      
      time.sleep(2)
      
      product_names = driver.find_elements(By.CLASS_NAME, "product-name")
      for name in product_names:
          print(name.text)
      
      driver.quit()