Hi!

Is there any way to set the number of players_per_group in session configs?

I have multiple apps in a row and all of them need to have the same number of players_per_group. It's tricky to set this quickly if it's not in session configs but instead in Constants.

Is there any way to be able to set group size elsewhere than Constants?

Thanks!!

You can set groups in creating_session:

def creating_session(subsession: Subsession):
    session = subsession.session
    players = subsession.get_players()
    
    ppg = session.config['players_per_group']
    matrix = []
    start = 0
    for i in range(0, len(players), ppg):
        matrix.append(players[start:start+ppg])
        start += ppg
    subsession.set_group_matrix(matrix)

Or, if you're using group_by_arrival_time, you can define your group_by_arrival_time_method to create a group of any size.