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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def load(self, pathname):
 """Loads entry from directory."""

        match = self._entry_re.match(pathname)
        if not match:
            return None
        self.ignore = (match.group(1) == "ignore")
        if not os.path.isdir(pathname):
            raise ValueError("%s: not a directory" % pathname)
        if not os.access(pathname, os.R_OK | os.W_OK):
            raise ValueError("%s: insufficient access privileges" % pathname)
        # parse index.html file
        parser = Purr.Parsers.LogEntryIndexParser(pathname)
        self.index_file = os.path.join(pathname, 'index.html')
        for i, line in enumerate(open(self.index_file)):
            try:
                parser.feed(line)
            except:
                dprintf(0, "parse error at line %d of %s\n", i, self.index_file)
                raise
        # set things up from parser
        try:
            self.timestamp = int(float(parser.timestamp))
        except:
            self.timestamp = int(time.time())
        self.title = getattr(parser, 'title', None)
        if self.title is None:
            self.title = "Malformed entry, probably needs to be deleted"
        self.comment = getattr(parser, 'comments', None) or ""
        self.dps = getattr(parser, 'dps', [])
        self.pathname = pathname
        # see if any data products have been removed on us
        self.dps = [dp for dp in self.dps if os.path.exists(dp.fullpath)]
        # see if the cached include file is up-to-date
        self.cached_include = cache = os.path.join(pathname, 'index.include.html')
        mtime = (os.path.exists(cache) or 0) and os.path.getmtime(cache)
        if mtime >= max(Purr.Render.youngest_renderer, os.path.getmtime(self.index_file)):
            dprintf(2, "entry %s has a valid include cache\n", pathname)
            self.cached_include_valid = True
        else:
            dprintf(2, "entry %s does not have a valid include cache\n", pathname)
            self.cached_include_valid = False
        # mark entry as unchanged, if renderers are older than index
        self.updated = (Purr.Render.youngest_renderer > os.path.getmtime(self.index_file))