def dataframe(self):
        """
        Returns a pandas DataFrame containing all other class properties and
        values. The index for the DataFrame is the string URI that is used to
        instantiate the class, such as '201802040nwe'.
        """
        if self._away_points is None and self._home_points is None:
            return None
        fields_to_include = {
            'attendance': self.attendance,
            'away_first_downs': self.away_first_downs,
            'away_fourth_down_attempts': self.away_fourth_down_attempts,
            'away_fourth_down_conversions': self.away_fourth_down_conversions,
            'away_fumbles': self.away_fumbles,
            'away_fumbles_lost': self.away_fumbles_lost,
            'away_interceptions': self.away_interceptions,
            'away_net_pass_yards': self.away_net_pass_yards,
            'away_pass_attempts': self.away_pass_attempts,
            'away_pass_completions': self.away_pass_completions,
            'away_pass_touchdowns': self.away_pass_touchdowns,
            'away_pass_yards': self.away_pass_yards,
            'away_penalties': self.away_penalties,
            'away_points': self.away_points,
            'away_rush_attempts': self.away_rush_attempts,
            'away_rush_touchdowns': self.away_rush_touchdowns,
            'away_rush_yards': self.away_rush_yards,
            'away_third_down_attempts': self.away_third_down_attempts,
            'away_third_down_conversions': self.away_third_down_conversions,
            'away_time_of_possession': self.away_time_of_possession,
            'away_times_sacked': self.away_times_sacked,
            'away_total_yards': self.away_total_yards,
            'away_turnovers': self.away_turnovers,
            'away_yards_from_penalties': self.away_yards_from_penalties,
            'away_yards_lost_from_sacks': self.away_yards_lost_from_sacks,
            'date': self.date,
            'duration': self.duration,
            'home_first_downs': self.home_first_downs,
            'home_fourth_down_attempts': self.home_fourth_down_attempts,
            'home_fourth_down_conversions': self.home_fourth_down_conversions,
            'home_fumbles': self.home_fumbles,
            'home_fumbles_lost': self.home_fumbles_lost,
            'home_interceptions': self.home_interceptions,
            'home_net_pass_yards': self.home_net_pass_yards,
            'home_pass_attempts': self.home_pass_attempts,
            'home_pass_completions': self.home_pass_completions,
            'home_pass_touchdowns': self.home_pass_touchdowns,
            'home_pass_yards': self.home_pass_yards,
            'home_penalties': self.home_penalties,
            'home_points': self.home_points,
            'home_rush_attempts': self.home_rush_attempts,
            'home_rush_touchdowns': self.home_rush_touchdowns,
            'home_rush_yards': self.home_rush_yards,
            'home_third_down_attempts': self.home_third_down_attempts,
            'home_third_down_conversions': self.home_third_down_conversions,
            'home_time_of_possession': self.home_time_of_possession,
            'home_times_sacked': self.home_times_sacked,
            'home_total_yards': self.home_total_yards,
            'home_turnovers': self.home_turnovers,
            'home_yards_from_penalties': self.home_yards_from_penalties,
            'home_yards_lost_from_sacks': self.home_yards_lost_from_sacks,
            'losing_abbr': self.losing_abbr,
            'losing_name': self.losing_name,
            'stadium': self.stadium,
            'time': self.time,
            'winner': self.winner,
            'winning_abbr': self.winning_abbr,
            'winning_name': self.winning_name
        }
        return pd.DataFrame([fields_to_include], index=[self._uri])
Returns a pandas DataFrame containing all other class properties and
        values. The index for the DataFrame is the string URI that is used to
        instantiate the class, such as '201802040nwe'.