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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 render_sphinx_doc(self, doc, context=None, css_path=CSS_PATH):

 """Transform doc string dictionary to HTML and show it"""

        # Math rendering option could have changed
        if self.main.editor is not None:
            fname = self.main.editor.get_current_filename()
            dname = osp.dirname(fname)
        else:
            dname = ''
        self._sphinx_thread.render(doc, context, self.get_option('math'),
                                   dname, css_path=self.css_path)