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@mozillazg
Created September 5, 2012 14:16
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cs101-unit2
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>')
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