input: from typing import List
  
  def extract_urls_from_webpage(urls: List[str]) -> List[str]:
      """Create a web scraper that extracts URL from a list of webpages using the BeautifulSoup library.
      >>> extract_urls_from_webpage(["https://example.com"])
      ['https://example.com/page1', 'https://example.com/page2']
      """
      import requests
      from bs4 import BeautifulSoup
      extracted_urls = []
      for url in urls:
          webpage = requests.get(url)
          soup = BeautifulSoup(webpage.content, 'html.parser')
          links = soup.find_all('a')
          for link in links:
              extracted_urls.append(link.get('href'))
      return extracted_urls
output:     import requests
      from bs4 import BeautifulSoup
      extracted_urls = []
      for url in urls:
          webpage = requests.get(url)
          soup = BeautifulSoup(webpage.content, 'html.parser')
          links = soup.find_all('a')
          for link in links:
              href = link.get('href')
              if href and href.startswith('http'):
                  extracted_urls.append(href)
      return extracted_urls