Re: [Tutor] Read same instance twice
On Mon, Oct 27, 2008 at 4:03 PM, Øyvind <[EMAIL PROTECTED]> wrote:
> Hello.
>
> I am trying to gather some information from a webpage:
>
> side = urlopen("http://www.website.no";)
> rawstr = r"""spy.target="_top">(.*?)$"""
> rawstr2 = r"""spy.target2="_top">(.*?)$"""
>
> compile_obj = re.compile(rawstr, re.IGNORECASE| re.MULTILINE| re.VERBOSE
> | re.UNICODE)
> compile_obj2 = re.compile(rawstr2, re.IGNORECASE| re.MULTILINE|
> re.VERBOSE | re.UNICODE)
>
> liste = self.compile_obj.findall(side.read())
>
> liste = self.compile_obj2.findall(side.read())
>
> It works like a dream getting the first info, but the second doesn't work.
> The instance is empty.
> How can I easiest pick up more information from the site without opening
> it more than once?
Just remember the data. It's like reading a file, you can't read the
same file twice without re-opening, but you can remember the (string)
data from the file and use it however you want to:
data = side.read()
liste = self.compile_obj.findall(data)
liste2 = self.compile_obj2.findall(data)
Kent
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Re: [Tutor] Read same instance twice
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Øyvind wrote:
> Hello.
>
> I am trying to gather some information from a webpage:
>
> side = urlopen("http://www.website.no";)
> rawstr = r"""spy.target="_top">(.*?)$"""
> rawstr2 = r"""spy.target2="_top">(.*?)$"""
>
> compile_obj = re.compile(rawstr, re.IGNORECASE| re.MULTILINE| re.VERBOSE
> | re.UNICODE)
> compile_obj2 = re.compile(rawstr2, re.IGNORECASE| re.MULTILINE|
> re.VERBOSE | re.UNICODE)
>
> liste = self.compile_obj.findall(side.read())
>
> liste = self.compile_obj2.findall(side.read())
>
> It works like a dream getting the first info, but the second doesn't work.
> The instance is empty.
>
That's because you read all of it and passed it to the first regex.
Change to:
side = urlopen("http://www.website.no";).read()
then:
liste = compile_obj.findall(side)
liste = compile_obj2.findall(side)
That reads the site's contents once, then you can do whatever you want
with it in your program. I'm not sure why you had the self. reference to
compile_obj, so mix to fit your circumstances :)
Brian
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