all_links.py

#procedure to download web html content
def get_page(url):
    try:
        import urllib
        return urllib.urlopen(url).read()
    except:
        return ""

#procedure to find and extract the first href link in 'page', along with the next position in the text
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

#procedure to iterate thru all links in 'page'
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(get_page('http://dannyroosevelt.com'))