elements.py 文件源码

def is_text(self):
        ''' Check if this element is a text

        Also comments and processing instructions
        are instances of NavigableString,
        so we have to make additional checks
        '''
        if not isinstance(self.context, NavigableString):
            return False
        if (
            self.is_comment() or
            self.is_doctype() or
            self.is_processing_instruction()
        ):
            return False
        return True