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Game.py
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from __future__ import division
import datetime as dt
import numpy as np
from settings import pbp
from itertools import combinations
from Team import Team
from Player import Player
from Event import Event
from Boxscore import TeamBoxscore, PlayerBoxscore
from utils import shared_times, recursive_intersect
from pprint import pprint
class NoCollectionError(Exception):
def __init__(self, msg):
self.msg = msg
def __str__(self):
return self.msg
class GameDataError(Exception):
def __init__(self, msg):
self.msg = msg
def __str__(self):
return self.msg
class Game:
_coll = pbp
def __init__(self, event_id=None, collection=None):
if collection is not None:
self.__class__._coll = collection
self._coll = collection
elif self._coll is None:
if self.__class__._coll is None:
raise NoCollectionError('Must have a collection in MongoDB!')
else:
self._coll = self.__class__._coll
if event_id is not None:
self.get_by_event_id(event_id)
def get_by_event_id(self, event_id):
data = self._coll.find_one({'league.season.eventType.0.events.0.eventId': event_id})
self._data = data
self.set_data(self._data)
def set_data(self, data):
# all the actual data is contained in here, so let's just throw away the outer
# shells of the json
self._core_data = data['league']['season']['eventType'][0]['events'][0]
self._id = self._core_data['eventId']
self._game_type = data['league']['season']['eventType'][0]['name']
date_string = self._core_data['startDate'][0]['full'].split('T')[0]
self._date = dt.datetime.strptime(date_string, '%Y-%m-%d')
self._teams = self._core_data['teams']
self._home_team = self._teams[0]
self._away_team = self._teams[1]
self._home_boxscore = self._core_data['boxscores'][0]
self._away_boxscore = self._core_data['boxscores'][1]
self._pbp = self._core_data['pbp']
self._events = sorted([Event(play_data) for play_data in self._pbp])
self._add_custom_fields()
self._pre_cache_lineups()
def _add_custom_fields(self):
id_str = 'league.season.eventType.0.events.0.eventId'
update_str = 'league.season.eventType.0.events.0.boxscores.'
if 'lineups' not in self._core_data['boxscores'][0]:
self._coll.update_one({id_str: self._id}, {'$set': {update_str + '0.lineups': []}})
self._coll.update_one({id_str: self._id}, {'$set': {update_str + '1.lineups': []}})
self._core_data['boxscores'][0]['lineups'] = []
self._core_data['boxscores'][1]['lineups'] = []
def _pre_cache_lineups(self):
# pre-cache lineups on load
self._non_empty_lineups = {}
self._empty_lineups = {}
self._non_empty_lineups[0] = [lineup for lineup in self._core_data['boxscores'][0]['lineups']
if lineup['times'] != []]
self._non_empty_lineups[1] = [lineup for lineup in self._core_data['boxscores'][1]['lineups']
if lineup['times'] != []]
self._empty_lineups[0] = [lineup for lineup in self._core_data['boxscores'][0]['lineups']
if lineup['times'] == []]
self._empty_lineups[1] = [lineup for lineup in self._core_data['boxscores'][1]['lineups']
if lineup['times'] == []]
def __str__(self):
home_team_name = self._home_team['location'] + ' ' + self._home_team['nickname']
away_team_name = self._away_team['location'] + ' ' + self._away_team['nickname']
return '{0} vs {1} on {2!s}'.format(home_team_name, away_team_name, self.date.strftime('%Y-%m-%d'))
def __repr__(self):
return self.__str__()
@property
def id(self):
return self._id
@property
def game_type(self):
return self._game_type
@property
def teams(self):
return self._teams
@property
def home_team(self):
return Team(self._home_team['teamId'])
@property
def away_team(self):
return Team(self._away_team['teamId'])
@property
def home_players(self):
home_player_ids = [player['player']['playerId'] for player in self._home_boxscore['playerstats']]
home_players = [Player(id) for id in home_player_ids]
return home_players
@property
def away_players(self):
away_player_ids = [player['player']['playerId'] for player in self._away_boxscore['playerstats']]
away_players = [Player(id) for id in away_player_ids]
return away_players
def game_players(self, team):
if self.home_team == team:
return self.home_players
elif self.away_team == team:
return self.away_players
else:
raise GameDataError('No such team: ({0}) for this game!'.format(team))
@property
def pbp(self):
return self._pbp
@property
def date(self):
return self._date
@property
def periods(self):
return self._core_data['eventStatus']['period']
@property
def home_boxscore(self):
return self._core_data['boxscores'][0]
@property
def away_boxscore(self):
return self._core_data['boxscores'][1]
def team_boxscore(self, team):
if self.is_home(team):
return self.home_boxscore
elif self.is_away(team):
return self.away_boxscore
else:
raise GameDataError('{} did not participate in {}'.format(team, self))
def is_home(self, team):
if self.home_team == team:
return True
else:
return False
def is_away(self, team):
if self.away_team == team:
return True
else:
return False
def score(self, team):
if self.is_home(team):
return self.home_boxscore['teamStats']['points']
elif self.is_away(team):
return self.away_boxscore['teamStats']['points']
else:
raise GameDataError('{} did not participate in {}'.format(team, self))
@property
def home_lineup_combinations(self):
players = self.home_players
return combinations(players, 5)
@property
def away_lineup_combinations(self):
players = self.away_players
return combinations(players, 5)
@property
def events(self):
return self._events
@property
def home_possessions(self):
home_fga = self.home_boxscore['teamStats']['fieldGoals']['attempted']
home_fgm = self.home_boxscore['teamStats']['fieldGoals']['made']
home_fta = self.home_boxscore['teamStats']['freeThrows']['attempted']
home_orb = self.home_boxscore['teamStats']['rebounds']['offensive']
home_drb = self.home_boxscore['teamStats']['rebounds']['defensive']
home_tov = self.home_boxscore['teamStats']['turnovers']['total']
away_fga = self.away_boxscore['teamStats']['fieldGoals']['attempted']
away_fgm = self.away_boxscore['teamStats']['fieldGoals']['made']
away_fta = self.away_boxscore['teamStats']['freeThrows']['attempted']
away_orb = self.away_boxscore['teamStats']['rebounds']['offensive']
away_drb = self.away_boxscore['teamStats']['rebounds']['defensive']
away_tov = self.away_boxscore['teamStats']['turnovers']['total']
home_pos = 0.5 * ((home_fga + 0.4 * home_fta - 1.07 * (home_orb / (home_orb + away_drb)) *
(home_fga - home_fgm) + home_tov) +
(away_fga + 0.4 * away_fta - 1.07 * (away_orb / (away_orb + home_drb)) *
(away_fga - away_fgm) + away_tov))
return home_pos
@property
def away_possessions(self):
home_fga = self.home_boxscore['teamStats']['fieldGoals']['attempted']
home_fgm = self.home_boxscore['teamStats']['fieldGoals']['made']
home_fta = self.home_boxscore['teamStats']['freeThrows']['attempted']
home_orb = self.home_boxscore['teamStats']['rebounds']['offensive']
home_drb = self.home_boxscore['teamStats']['rebounds']['defensive']
home_tov = self.home_boxscore['teamStats']['turnovers']['total']
away_fga = self.away_boxscore['teamStats']['fieldGoals']['attempted']
away_fgm = self.away_boxscore['teamStats']['fieldGoals']['made']
away_fta = self.away_boxscore['teamStats']['freeThrows']['attempted']
away_orb = self.away_boxscore['teamStats']['rebounds']['offensive']
away_drb = self.away_boxscore['teamStats']['rebounds']['defensive']
away_tov = self.away_boxscore['teamStats']['turnovers']['total']
away_pos = 0.5 * ((away_fga + 0.4 * away_fta - 1.07 * \
(away_orb / (away_orb + home_drb)) * \
(away_fga - away_fgm) + away_tov) + \
(home_fga + 0.4 * home_fta - 1.07 * \
(home_orb / (home_orb + away_drb)) * \
(home_fga - home_fgm) + home_tov))
return away_pos
def possessions(self, team):
if self.is_home(team):
return self.home_possessions
elif self.is_away(team):
return self.away_possessions
else:
raise GameDataError('{} did not participate in {}'.format(team, self))
@property
def home_drtg(self):
return 100 * self.away_boxscore['teamStats']['points'] / self.away_possessions
@property
def home_ortg(self):
return 100 * self.home_boxscore['teamStats']['points'] / self.home_possessions
@property
def away_drtg(self):
return 100 * self.home_boxscore['teamStats']['points'] / self.home_possessions
@property
def away_ortg(self):
return 100 * self.away_boxscore['teamStats']['points'] / self.away_possessions
@property
def home_points(self):
return int(self.home_boxscore['teamStats']['points'])
@property
def away_points(self):
return int(self.away_boxscore['teamStats']['points'])
def __contains__(self, player_or_team):
if isinstance(player_or_team, Player):
return self.player_in_game(player_or_team)
elif isinstance(player_or_team, Team):
return self.is_home(player_or_team) or self.is_away(player_or_team)
else:
raise TypeError('{} is neither Player nor Team!'.format(repr(player_or_team)))
def player_in_game(self, player):
home = [self.home_boxscore['teamId']
for stat in self.home_boxscore['playerstats']
if stat['player']['playerId'] == player.id]
away = [self.away_boxscore['teamId']
for stat in self.away_boxscore['playerstats']
if stat['player']['playerId'] == player.id]
if home != [] or away != []:
return True
else:
return False
def player_team(self, player):
home = [self.home_boxscore['teamId']
for stat in self.home_boxscore['playerstats']
if stat['player']['playerId'] == player.id]
away = [self.away_boxscore['teamId']
for stat in self.away_boxscore['playerstats']
if stat['player']['playerId'] == player.id]
if home != [] and away == []:
return Team(home[0])
elif home == [] and away != []:
return Team(away[0])
elif home == [] and away == []:
raise GameDataError('No such player in this game: {}'.format(player))
elif home != [] and away != []:
raise GameDataError('Same player {} on two different teams! Something is terribly wrong!'.format(player))
def player_boxscore(self, player):
player_stats = [stat for stat in self.home_boxscore['playerstats'] if stat['player']['playerId'] == player.id] + \
[stat for stat in self.away_boxscore['playerstats'] if stat['player']['playerId'] == player.id]
if player_stats != []:
return player_stats[0]
else:
raise GameDataError('No such player in this game: {0}'.format(str(player)))
def opponent(self, team):
if self.is_home(team):
return self.away_team
elif self.is_away(team):
return self.home_team
else:
raise GameDataError('{} did not participate in {}'.format(team, self))
def lineup_combinations(self, team):
players = [player for player in self.game_players(team) if player.minutes_played(self) > 0]
return combinations(players, 5)
def _find_empty_lineup(self, lineup_hash, team_index):
lineups = [lineup for lineup in self._empty_lineups[team_index]
if 'hash' in lineup and lineup['hash'] == lineup_hash]
if lineups != []:
return lineups[0]
else:
return None
def _find_non_empty_lineup(self, lineup_hash, team_index):
lineups = [lineup for lineup in self._non_empty_lineups[team_index]
if 'hash' in lineup and lineup['hash'] == lineup_hash]
if lineups != []:
return lineups[0]
else:
return None
def _lineup_hash(self, players):
"""Hash the lineup by taking the hash of the sum of the player IDs.
Used to keep track of which lineups have already been computed on a
per-game basis."""
return hash(np.sum([player.id for player in players]))
def time_by_lineup(self, players):
team = self.player_team(players[0])
for player in players[1:]:
if not team.is_player_on_team(player, self):
raise GameDataError('All players must be on the same team!')
team = self.player_team(players[0])
if self.is_home(team):
team_index = 0
elif self.is_away(team):
team_index = 1
else:
raise GameDataError('{} did not participate in {}'.format(team, self))
timestream = []
ts_empty = False
lineup_hash = self._lineup_hash(players)
non_empty = self._find_non_empty_lineup(lineup_hash, team_index)
empty = self._find_empty_lineup(lineup_hash, team_index)
if empty and not non_empty:
#print 'no timestream for lineup: {}'.format(players)
timestream = []
elif non_empty and not empty:
#print 'retrieving cached timestream for lineup: {}'.format(players)
for interval in non_empty['times']:
start = dt.timedelta(seconds=interval['start'])
end = dt.timedelta(seconds=interval['end'])
timestream.append((start, end))
elif not empty and not non_empty:
#print 'calculating timestream for lineup: {}'.format(players)
timestream = self.multiple_player_overlap(players)
# this is expensive to compute so cache it in the db because it doesn't change
# on a per-game basis
id_str = 'league.season.eventType.0.events.0.eventId'
update_str = 'league.season.eventType.0.events.0.boxscores.{}.lineups'.format(team_index)
player_data = [player.id for player in players]
time_data = []
lineup_hash = hash(np.sum(player_data))
for interval in timestream:
time_data.append({'start': interval[0].seconds, 'end': interval[1].seconds})
lineup_data = {'players': player_data, 'times': time_data, 'hash': lineup_hash}
self._coll.update_one({id_str: self._id},
{'$addToSet': {update_str: lineup_data}})
# update the in-memory data
self._core_data['boxscores'][team_index]['lineups'].append(lineup_data)
return timestream
def events_by_player(self, player):
player_events = [event for event in self.events if player in event.players]
return player_events
def quarter_starters(self):
starting_lineup = set([player[0] for player in
[event.players for event in self._events if event.play_text == 'Starting Lineup']])
periods = self.periods
quarter_starters = {1: starting_lineup}
for q in range(2, periods + 1):
quarter_plays = sorted([ev for ev in self._events if ev.period == q])
#pprint(quarter_plays)
home_players_used = set()
away_players_used = set()
subs_used = set()
i = 0
done = False
while i < len(quarter_plays) and not done:
event = quarter_plays[i]
players = event.players
if event.play_text.find('Substitution:') > -1:
subbed_in_player = players[0]
subbed_out_player = players[1]
subs_used.add(subbed_in_player)
team = self.player_team(subbed_out_player)
if team == self.home_team and len(home_players_used) < 5 and subbed_out_player not in subs_used:
home_players_used.add(subbed_out_player)
if team == self.away_team and len(away_players_used) < 5 and subbed_out_player not in subs_used:
away_players_used.add(subbed_out_player)
elif not event.is_technical:
for player in players:
if player not in subs_used:
team = self.player_team(player)
if team == self.home_team and len(home_players_used) < 5:
home_players_used.add(player)
if team == self.away_team and len(away_players_used) < 5:
away_players_used.add(player)
i += 1
if len(home_players_used) == 5 and len(away_players_used) == 5:
done = True
quarter_starters[q] = home_players_used | away_players_used
return quarter_starters
def quarter_enders(self):
quarter_enders = {}
periods = self.periods
for q in range(1, periods + 1):
quarter_plays = sorted([ev for ev in self._events if ev.period == q], reverse=True)
subs_used = set()
home_players_used = set()
away_players_used = set()
i = 0
done = False
while i < len(quarter_plays) and not done:
event = quarter_plays[i]
players = event.players
if event.play_text.find('Substitution:') > -1:
subbed_in_player = players[0]
subbed_out_player = players[1]
team = self.player_team(subbed_in_player)
if team == self.home_team and len(home_players_used) < 5 and subbed_in_player not in subs_used:
home_players_used.add(subbed_in_player)
if team == self.away_team and len(away_players_used) < 5 and subbed_in_player not in subs_used:
away_players_used.add(subbed_in_player)
subs_used.add(subbed_out_player)
#else:
elif not event.is_technical:
for player in players:
if player not in subs_used:
team = self.player_team(player)
if team == self.home_team and len(home_players_used) < 5:
home_players_used.add(player)
if team == self.away_team and len(away_players_used) < 5:
away_players_used.add(player)
# if q == 2:
# print event, event.event_id
# print 'home:', home_players_used
# print 'away:', away_players_used
# print 'subs:', subs_used
i += 1
if len(home_players_used) == 5 and len(away_players_used) == 5:
done = True
quarter_enders[q] = home_players_used | away_players_used
return quarter_enders
@classmethod
def look_up_game(cls, game_day, team):
game = cls._coll.find_one({'league.season.eventType.0.events.0.startDate.0.month': game_day.month,
'league.season.eventType.0.events.0.startDate.0.year': game_day.year,
'league.season.eventType.0.events.0.startDate.0.date': game_day.day,
'$or': [{'league.season.eventType.0.events.0.teams.0.teamId': team.id},
{'league.season.eventType.0.events.0.teams.1.teamId': team.id}]})
if game is not None:
return Game(game['league']['season']['eventType'][0]['events'][0]['eventId'])
else:
return None
def multiple_player_overlap(self, players_on, players_off=None):
#import time
#start = time.clock()
player_times = [player.time_on_court(self) for player in players_on]
#end = time.clock()
#print 'took {}s to calculate player times on court'.format(end - start)
shared_times = recursive_intersect(player_times)[0]
#print player_times
return shared_times
def events_in_interval(self, interval):
return sorted([event for event in self.events if interval[0] <= event.play_time <= interval[1]])
def events_not_in_interval(self, interval):
return sorted([event for event in self.events if not interval[0] <= event.play_time <= interval[1]])
def events_in_intervals(self, intervals):
all_plays = []
for interval in intervals:
all_plays += self.events_in_interval(interval)
return sorted(all_plays, reverse=True)
def calc_events_shot_clock(self):
q_starts = [event for event in self.events if event.is_start_period]
q_indices = [self.events.index(q_start) for q_start in q_starts]
periods = [1, 2, 3, 4]
for q in periods:
plays = [event for event in self.events if event.period == q]
shot_clock = 24.0
for i, play in enumerate(plays):
if i > 0 and play.play_time > plays[i-1].play_time:
t_diff = play.play_time - plays[i-1].play_time
shot_clock_elapsed = t_diff.seconds
shot_clock -= shot_clock_elapsed
def __cmp__(self, other):
if self.date == other.date:
return 0
elif self.date < other.date:
return -1
elif self.date > other.date:
return 1
def team_stats_by_time(self, team, timestream):
events = self.events_in_intervals(timestream)
team_box_score = TeamBoxscore()
for event in events:
# we only care about plays that actually accrue counting stats
if event.is_field_goal_made:
player = event.shot_made_by
opponent = self.opponent(team)
if team.is_player_on_team(player, self):
assister = event.assisted_by
if event.is_three_pointer:
team_box_score.points += 3
team_box_score.three_point_field_goals_attempted += 1
team_box_score.three_point_field_goals_made += 1
else:
team_box_score.points += 2
team_box_score.field_goals_made += 1
team_box_score.field_goals_attempted += 1
if assister:
team_box_score.assists += 1
elif opponent.is_player_on_team(player, self):
if event.is_three_pointer:
team_box_score.points_against += 3
else:
team_box_score.points_against += 2
elif event.is_field_goal_missed:
player = event.shot_missed_by
if team.is_player_on_team(player, self):
if event.is_three_pointer:
team_box_score.three_point_field_goals_attempted += 1
team_box_score.field_goals_attempted += 1
elif event.is_free_throw_made:
player = event.free_throw_made_by
opponent = self.opponent(team)
if team.is_player_on_team(player, self):
team_box_score.points += 1
team_box_score.free_throws_made += 1
team_box_score.free_throws_attempted += 1
elif opponent.is_player_on_team(player, self):
team_box_score.points_against += 1
elif event.is_free_throw_missed:
player = event.free_throw_missed_by
if team.is_player_on_team(player, self):
team_box_score.points += 1
team_box_score.free_throws_made += 1
team_box_score.free_throws_attempted += 1
elif event.is_oreb:
player = event.rebounded_by
if player and team.is_player_on_team(player, self):
team_box_score.rebounds_offensive += 1
elif event.is_dreb:
player = event.rebounded_by
if player and team.is_player_on_team(player, self):
team_box_score.rebounds_defensive += 1
elif event.is_turnover:
player = event.turned_over_by
stolen_by = event.stolen_by
if player and team.is_player_on_team(player, self):
team_box_score.turnovers_total += 1
elif stolen_by and team.is_player_on_team(stolen_by, self):
team_box_score.steals += 1
else:
# shot clock turnover
if team.nickname in event.play_text:
team_box_score.turnovers_total += 1
return team_box_score
def stats_by_lineup(self, players):
# all players are assumed to be on the same team
# if this is not the case, bail
team = self.player_team(players[0])
for player in players[1:]:
if not team.is_player_on_team(player, self):
raise GameDataError('All players must be on the same team!')
timestream = self.time_by_lineup(players)
box_score = self.team_stats_by_time(team, timestream)
return box_score
def plot_all_game_charts(self):
home_players, away_players = get_player_boxscores(game_id)
for player in home_players:
print 'Processing ', player['first-name'], player['last-name']
player_id = player['id']
player_shot_chart(game_id, player_id)
team_shot_chart_with_player(game_id, player_id)
team_shot_chart_without_player(game_id, player_id)
for player in away_players:
print 'Processing ', player['first-name'], player['last-name']
player_id = player['id']
player_shot_chart(game_id, player_id)
team_shot_chart_with_player(game_id, player_id)
team_shot_chart_without_player(game_id, player_id)