def _setWorldParameters(self):
        self.world.setGravity((0, -9.81, 0))
        # self.world.setERP(0.2)
        # self.world.setCFM(1e-9)
sets parameters for ODE world object: gravity, error correction (ERP, default=0.2),
dataset/ETHPy150Open pybrain/pybrain/pybrain/rl/environments/ode/environment.py/ODEEnvironment._setWorldParameters