"""DOM parser for News search resultsImplement a simple DOM parser for the Yahoo Search Web Servicesnews search APIs."""__revision__ = "$Id: news.py,v 1.2 2005/10/27 02:59:15 zwoop Exp $"__version__ = "$Revision: 1.2 $"__author__ = "Leif Hedstrom <leif@ogre.com>"__date__ = "Wed Oct 26 15:02:17 PDT 2005"from yahoo.search import dom## News Search DOM parser#class NewsSearch(dom.DOMResultParser):    """NewsSearch - DOM parser for News Search        Each result is a dictionary populated with the extracted data from the    XML results. The following keys are always available:        Title            - Title of the article.        Summary          - Summary of the text associated with the article.        Url              - The URL for the article.        ClickUrl         - The URL for linking to the article.        NewsSource       - The company that distributed the news article.        NewsSourceUrl    - The URL for the news source.        Language         - Language of the News article.        PubslishDate     - Publish date of the article.    The following attributes are optional, and might not be set:        ModificationDate - Date entry was modified.        Thumbnail        - The URL of the thumbnail file.    If present, the Thumbnail value is in turn another dictionary, which will    have these keys:        Url             - URL of the thumbnail.        Height          - Height of the thumbnail in pixels (optional).        Width           - Width of the thumbnail in pixels (optional).    """    def _init_res_fields(self):        """Initialize the valid result fields."""        super(NewsSearch, self)._init_res_fields()        self._res_fields.extend((('NewsSource', None, None),                                 ('NewsSourceUrl', None, None),                                 ('Language', None, None),                                 ('PublishDate', None, None),                                 ('ModificationDate', "", None)))    def _parse_result(self, result):        """Internal method to parse one Result node"""        res = super(NewsSearch, self)._parse_result(result)        node = result.getElementsByTagName('Thumbnail')        if node:            res['Thumbnail'] = self._tags_to_dict(node[0], (('Url', None, None),                                                            ('Height', 0, int),                                                            ('Width', 0, int)))        else:            res['Thumbnail'] = None        return res## local variables:# mode: python# indent-tabs-mode: nil# py-indent-offset: 4# end: