Fredrik Lundh <[EMAIL PROTECTED]> wrote：
李政 wrote:
> I've a problem with regular express(dot problem). I checked Python
> Library Reference, but i can't find any infomation that is useful.
like what a dot means in a regular _expression_? you really need to work
on your google fu ;-)
in the meantime, look under "The special characters are" on this page:May be my bad writing english confused you. I know what a dot means in a regular _expression_. In the case you are forced to use regular _expression_ in the way:patter = 'www.'if re.compile(pattern).match(string) is not None:......but not:if re.compile(r'www.').match(string) is not None:orif re.compile('www\.').match(string) is not None:, how you process special characters, like dot.
> * if re.compile(pattern).match(urldomain) is not None:*
> return INTERNAL_LINK # match. url is internal link
if you want to check if the url starts with a given prefix, use
if url.startswith(prefix):
Your suggestion is really helpful. I use both startswith(prefix) and endswith(suffix) in my program, and it works better. Here is the new one:=====================================================def getLinkType(url, sitedomain):
# get the domain which 'url' belongs to
urldomain = urlparse4esa(url)[1]
tmpsd = ''
if sitedomain.startswith('www'):
tmpsd = sitedomain[4:]
if urldomain.endswith(tmpsd):
return INTERNAL_LINK # match. url is internal link
else:
return EXTERNAL_LINK # doesn't match. url is external link=====================================================Thks for your help!Alex, China
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