DimaKudosh
commented
2 years ago I can't reproduce error with PositionsStack and GameStack from your sample. This error happened when solver can't solve problem with used constraints, for example you add stack with QB for GB but removed Rodgers from optimizer or any other discrepancy.
DataSci student, python noob here.
I can get this code to work, for the most part. When I start trying to add the stacking feature, it breaks.
I can get this one to work, but this seems to be the only one and it keeps using WAS: optimizer.add_stack(PositionsStack(['QB', 'WR'], for_teams=['GB', 'KC', 'WAS'])) # stack QB and WR for one of provided teams
Also, max exposure breaks it as well: lineups = optimizer.optimize(n=20, max_exposure=.5)
TYIA.
pip install pydfs-lineup-optimizer
from pydfs_lineup_optimizer import get_optimizer, Site, Sport
from pydfs_lineup_optimizer.stacks import TeamStack, PositionsStack, PlayersGroup, GameStack from pydfs_lineup_optimizer import AfterEachExposureStrategy
optimizer = get_optimizer(Site.DRAFTKINGS, Sport.FOOTBALL)
playerlist = "DKsalaries.csv"
optimizer.load_players_from_csv("DKSalaries.csv")
optimizer.add_stack(TeamStack(2))
optimizer.add_stack(TeamStack(3, for_teams=["GB"])) # stack 3 players from any of specified teams
optimizer.add_stack(GameStack(3))
optimizer.add_stack(PositionsStack(['QB', 'WR'], max_exposure=0.5)) # stack QB and WR with 0.5 exposure for all team stacks
optimizer.add_stack(PositionsStack(['QB', ('WR', 'TE')])) # stack QB and WR or TE from same team
optimizer.add_stack(PositionsStack(['QB', 'WR'], for_teams=['GB', 'KC', 'WAS'])) # stack QB and WR for one of provided teams
optimizer.add_stack(GameStack(5, min_from_team=2))
rodgers_adams_group = PlayersGroup(optimizer.player_pool.get_players('Aaron Rodgers', 'Randall Cobb'))
group = PlayersGroup(optimizer.player_pool.get_players('Aaron Rodgers', 'Randall Cobb'))
optimizer.add_players_group(group)
lineups = optimizer.optimize(n=20)
lineups
for lineup in lineups: print(lineup) print(lineup.players) print(lineup.fantasy_points_projection) print(lineup.salary_costs)
SolverInfeasibleSolutionException Traceback (most recent call last) /usr/local/lib/python3.7/dist-packages/pydfs_lineup_optimizer/lineup_optimizer.py in optimize(self, n, max_exposure, randomness, with_injured, exposure_strategy, exclude_lineups) 416 try: --> 417 solved_variables = solver.solve() 418 lineup_players = []
2 frames SolverInfeasibleSolutionException: ['_C3', '_C5', '_C8', '_C17', '_C26', '_C40', '_C52', '_C81', '_C82', '_C87', '_C125', '_C126', '_C127', '_C128', '_C129', '_C130', '_C131', '_C132', '_C133', '_C134', '_C135', '_C136', '_C137', '_C138', '_C139', '_C140', '_C141', '_C142', '_C143', '_C144', '_C145', '_C146', '_C147', '_C148', '_C149', '_C150', '_C151', '_C152', '_C153', '_C154', '_C212', '_C213', '_C214', '_C215', '_C216', '_C217', '_C218', '_C219', '_C220', '_C221', '_C222', '_C223', '_C224', '_C225', '_C226', '_C227', '_C228', '_C231', '_C235', '_C237', '_C238', '_C240']
During handling of the above exception, another exception occurred:
GenerateLineupException Traceback (most recent call last) /usr/local/lib/python3.7/dist-packages/pydfs_lineup_optimizer/lineup_optimizer.py in optimize(self, n, max_exposure, randomness, with_injured, exposure_strategy, exclude_lineups) 433 constraint.post_optimize(variables_names) 434 except SolverInfeasibleSolutionException as solver_exception: --> 435 raise GenerateLineupException(solver_exception.get_user_defined_constraints()) 436 self.last_context = context 437
GenerateLineupException: Can't generate lineups. DKSalaries.csv