HTMLParser problem

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  • Valkyrie
    #1

    HTMLParser problem

    I've fed some data to the HTML parser constructed by myself. Here is the
    beginning of the content of the fed data:
    =====
    <!doctype html public "-//W3C//DTD HTML 4.01//EN"
    "http://www.w3.org/TR/html4/strict.dtd">
    <html><head><me ta http-equiv="content-type" content="text/html;
    charset=ISO-8859-1"><link rel="stylesheet "
    href="http://us.i1.yimg.com/us.yimg.com/lib/s/yschx_040927.cs s" type="text/css"
    media="all">

    <![if !IE]>
    ....
    =====
    however, when "<![if !IE]>" is encountered, I found that handle_data() is called
    but not handle_decl(), (since I've let the function handle_decl to print sth on
    the screen, but nothing happened) and the following error is displayed:

    .......
    HTMLParser.HTML ParseError: unknown declaration: 'if !IE', at line 4, column 1

    May I ask why such error is raised? Thanks in advance!
    Tags: None
    • Richard Brodie
      #2
      Re: HTMLParser problem


      "Valkyrie" <valkyrie@cuhk. edu.hk> wrote in message news:1100610863 .75889@eng-ser4...
      [color=blue]
      > <![if !IE]>
      >
      > HTMLParser.HTML ParseError: unknown declaration: 'if !IE', at line 4, column 1
      >
      > May I ask why such error is raised?[/color]

      HTMLParser isn't very forgiving of bad HTML; you feed it syntactically invalid HTML,
      it tends to give you errors. That includes Microsoft only extensions like <![if !IE.
      Unless you know you have known valid sources it may be best to use one of
      the forgiving parsers: Beautiful Soup, UTidylib, libxml etc.. (see many past discussions).
      Uche's article: http://www.xml.com/pub/a/2004/09/08/pyxml.html may be of interest.


        Comment

        • Valkyrie
          #3
          Re: HTMLParser problem

          Thank you. That means there is no way to deal with it using simple python
          built-in functions?


          Richard Brodie wrote:
          [color=blue]
          > "Valkyrie" <valkyrie@cuhk. edu.hk> wrote in message news:1100610863 .75889@eng-ser4...
          >
          >[color=green]
          >><![if !IE]>
          >>
          >>HTMLParser.HT MLParseError: unknown declaration: 'if !IE', at line 4, column 1
          >>
          >>May I ask why such error is raised?[/color]
          >
          >
          > HTMLParser isn't very forgiving of bad HTML; you feed it syntactically invalid HTML,
          > it tends to give you errors. That includes Microsoft only extensions like <![if !IE.
          > Unless you know you have known valid sources it may be best to use one of
          > the forgiving parsers: Beautiful Soup, UTidylib, libxml etc.. (see many past discussions).
          > Uche's article: http://www.xml.com/pub/a/2004/09/08/pyxml.html may be of interest.
          >
          >[/color]

            Comment

            • Dirk-Jan C. Binnema
              #4
              Re: HTMLParser problem

              On Tue, 16 Nov 2004 22:14:33 +0800, Valkyrie <valkyrie@cuhk. edu.hk> wrote:[color=blue]
              > Thank you. That means there is no way to deal with it using simple python
              > built-in functions?[/color]

              Well, you can always preprocess your HTML by replacing dubious
              constructs. It's ugly but it works. You might even do something smart
              and replace thing back after processing.

              Good luck,
              Dirk.

              -------------------------------------
              Dirk-Jan C. Binnema (djcb)
              mail: djcb [at] djcbsoftware [dot] nl
              blog: www.djcbsoftware.nl/ChangeLog
              im : djcb@jabber.org
              -------------------------------------

                Comment

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