Get a specific canned comment

        :type value: str
        :param value: Canned comment to show

        :rtype: dict
        :return: A dictionnary containing canned comment description

def show_comment(self, value):
        """
        Get a specific canned comment

        :type value: str
        :param value: Canned comment to show

        :rtype: dict
        :return: A dictionnary containing canned comment description
        """
        comments = self.get_comments()
        comments = [x for x in comments if x['comment'] == value]
        if len(comments) == 0:
            raise Exception("Unknown comment")
        else:
            return comments[0]