def rand(m=1, n=None):
    return genmat(m,n, lambda i,j: random.random())
Check if the user was in the room at some point.
dataset/ETHPy150Open sunlightlabs/clearspending/completeness/statlib/matfunc.py/rand--crossover with--dataset/ETHPy150Open matrix-org/synapse/synapse/api/auth.py/Auth.check_user_was_in_room