cs101-unit2

gistfile1.py

def get_next_target(page):
      start_link = page.find('<a href=')
      if start_link == -1:
          return None, 0
      start_quote = page.find('"', start_link)
      end_quote = page.find('"', start_quote + 1)
      url = page[start_quote + 1:end_quote]
      return url, end_quote

def print_all_links(page):
      while True:
          url, endpos = get_next_target(page)
          if url:
              print url
              page = page[endpos:]
          else:
              break

print_all_links('this <a href="test1">link 1</a> is <a href="test2">link 2</a> a <a href="test3">link 3</a>')