def _dataframe_fields(self):
fields_to_include = {<EOL>'<STR_LIT>':<EOL>self.adjusted_net_yards_per_attempt_index,<EOL>'<STR_LIT>':<EOL>self.adjusted_net_yards_per_pass_attempt,<EOL>'<STR_LIT>': self.adjusted_yards_per_attempt,<EOL>'<STR_LIT>':<EOL>self.adjusted_yards_per_attempt_index,<EOL>'<STR_LIT>': self.all_purpose_yards,<EOL>'<STR_LIT>': self.approximate_value,<EOL>'<STR_LIT>': self.assists_on_tackles,<EOL>'<STR_LIT>': self.attempted_passes,<EOL>'<STR_LIT>': self.birth_date,<EOL>'<STR_LIT>': self.blocked_punts,<EOL>'<STR_LIT>': self.catch_percentage,<EOL>'<STR_LIT>': self.completed_passes,<EOL>'<STR_LIT>': self.completion_percentage_index,<EOL>'<STR_LIT>': self.espn_qbr,<EOL>'<STR_LIT>': self.extra_point_percentage,<EOL>'<STR_LIT>': self.extra_points_attempted,<EOL>'<STR_LIT>': self.extra_points_made,<EOL>'<STR_LIT>': self.field_goal_percentage,<EOL>'<STR_LIT>': self.field_goals_attempted,<EOL>'<STR_LIT>': self.field_goals_made,<EOL>'<STR_LIT>':<EOL>self.fifty_plus_yard_field_goal_attempts,<EOL>'<STR_LIT>':<EOL>self.fifty_plus_yard_field_goals_made,<EOL>'<STR_LIT>': self.fourth_quarter_comebacks,<EOL>'<STR_LIT>':<EOL>self.fourty_to_fourty_nine_yard_field_goal_attempts,<EOL>'<STR_LIT>':<EOL>self.fourty_to_fourty_nine_yard_field_goals_made,<EOL>'<STR_LIT>': self.fumbles,<EOL>'<STR_LIT>': self.fumbles_forced,<EOL>'<STR_LIT>': self.fumbles_recovered,<EOL>'<STR_LIT>':<EOL>self.fumbles_recovered_for_touchdown,<EOL>'<STR_LIT>': self.game_winning_drives,<EOL>'<STR_LIT>': self.games,<EOL>'<STR_LIT>': self.games_started,<EOL>'<STR_LIT>': self.height,<EOL>'<STR_LIT>': self.interception_percentage,<EOL>'<STR_LIT>':<EOL>self.interception_percentage_index,<EOL>'<STR_LIT>': self.interceptions,<EOL>'<STR_LIT>':<EOL>self.interceptions_returned_for_touchdown,<EOL>'<STR_LIT>': self.interceptions_thrown,<EOL>'<STR_LIT>': self.kickoff_return_touchdown,<EOL>'<STR_LIT>': self.kickoff_return_yards,<EOL>'<STR_LIT>': self.kickoff_returns,<EOL>'<STR_LIT>':<EOL>self.less_than_nineteen_yards_field_goal_attempts,<EOL>'<STR_LIT>':<EOL>self.less_than_nineteen_yards_field_goals_made,<EOL>'<STR_LIT>': self.longest_field_goal_made,<EOL>'<STR_LIT>': self.longest_interception_return,<EOL>'<STR_LIT>': self.longest_kickoff_return,<EOL>'<STR_LIT>': self.longest_pass,<EOL>'<STR_LIT>': self.longest_punt,<EOL>'<STR_LIT>': self.longest_punt_return,<EOL>'<STR_LIT>': self.longest_reception,<EOL>'<STR_LIT>': self.longest_rush,<EOL>'<STR_LIT:name>': self.name,<EOL>'<STR_LIT>': self.net_yards_per_attempt_index,<EOL>'<STR_LIT>': self.net_yards_per_pass_attempt,<EOL>'<STR_LIT>': self.passer_rating_index,<EOL>'<STR_LIT>': self.passes_defended,<EOL>'<STR_LIT>': self.passing_completion,<EOL>'<STR_LIT>': self.passing_touchdown_percentage,<EOL>'<STR_LIT>': self.passing_touchdowns,<EOL>'<STR_LIT>': self.passing_yards,<EOL>'<STR_LIT>': self.passing_yards_per_attempt,<EOL>'<STR_LIT>': self.player_id,<EOL>'<STR_LIT>': self.position,<EOL>'<STR_LIT>': self.punt_return_touchdown,<EOL>'<STR_LIT>': self.punt_return_yards,<EOL>'<STR_LIT>': self.punt_returns,<EOL>'<STR_LIT>': self.punts,<EOL>'<STR_LIT>': self.qb_record,<EOL>'<STR_LIT>': self.quarterback_rating,<EOL>'<STR_LIT>': self.receiving_touchdowns,<EOL>'<STR_LIT>': self.receiving_yards,<EOL>'<STR_LIT>': self.receiving_yards_per_game,<EOL>'<STR_LIT>':<EOL>self.receiving_yards_per_reception,<EOL>'<STR_LIT>': self.receptions,<EOL>'<STR_LIT>': self.receptions_per_game,<EOL>'<STR_LIT>': self.rush_attempts,<EOL>'<STR_LIT>': self.rush_attempts_per_game,<EOL>'<STR_LIT>': self.rush_touchdowns,<EOL>'<STR_LIT>': self.rush_yards,<EOL>'<STR_LIT>': self.rush_yards_per_attempt,<EOL>'<STR_LIT>': self.rush_yards_per_game,<EOL>'<STR_LIT>':<EOL>self.rushing_and_receiving_touchdowns,<EOL>'<STR_LIT>': self.sack_percentage,<EOL>'<STR_LIT>': self.sack_percentage_index,<EOL>'<STR_LIT>': self.sacks,<EOL>'<STR_LIT>': self.safeties,<EOL>'<STR_LIT>': self.season,<EOL>'<STR_LIT>': self.tackles,<EOL>'<STR_LIT>': self.team_abbreviation,<EOL>'<STR_LIT>':<EOL>self.thirty_to_thirty_nine_yard_field_goal_attempts,<EOL>'<STR_LIT>':<EOL>self.thirty_to_thirty_nine_yard_field_goals_made,<EOL>'<STR_LIT>': self.times_pass_target,<EOL>'<STR_LIT>': self.times_sacked,<EOL>'<STR_LIT>': self.total_punt_yards,<EOL>'<STR_LIT>': self.touchdown_percentage_index,<EOL>'<STR_LIT>': self.touches,<EOL>'<STR_LIT>':<EOL>self.twenty_to_twenty_nine_yard_field_goal_attempts,<EOL>'<STR_LIT>':<EOL>self.twenty_to_twenty_nine_yard_field_goals_made,<EOL>'<STR_LIT>': self.weight,<EOL>'<STR_LIT>': self.yards_from_scrimmage,<EOL>'<STR_LIT>': self.yards_lost_to_sacks,<EOL>'<STR_LIT>': self.yards_per_attempt_index,<EOL>'<STR_LIT>': self.yards_per_completed_pass,<EOL>'<STR_LIT>': self.yards_per_game_played,<EOL>'<STR_LIT>': self.yards_per_kickoff_return,<EOL>'<STR_LIT>': self.yards_per_punt,<EOL>'<STR_LIT>': self.yards_per_punt_return,<EOL>'<STR_LIT>': self.yards_per_touch,<EOL>'<STR_LIT>': self.yards_recovered_from_fumble,<EOL>'<STR_LIT>':<EOL>self.yards_returned_from_interception<EOL>}<EOL>return fields_to_include<EOL>
Creates a dictionary of all fields to include with DataFrame.

With the result of the calls to class properties changing based on the
class index value, the dictionary should be regenerated every time the
index is changed when the dataframe property is requested.

Returns
-------
dictionary
    Returns a dictionary where the keys are the shortened ``string``
    attribute names and the values are the actual value for each
    attribute for the specified index.