def test_differen_seed():
"""Different seeds give different random engines."""
ecole.seed(0)
random_engine_1 = ecole.spawn_random_engine()
ecole.seed(2)
random_engine_2 = ecole.spawn_random_engine()
assert random_engine_1 != random_engine_2
def test_same_seed():
"""Same seed give same random engines."""
ecole.seed(0)
random_engine_1 = ecole.spawn_random_engine()
ecole.seed(0)
random_engine_2 = ecole.spawn_random_engine()
assert random_engine_1 == random_engine_2
def __init__(self,
observation_function="default",
reward_function="default",
information_function="default",
scip_params=None,
**dynamics_kwargs) -> None:
self.observation_function = ecole.data.parse(
observation_function, self.__DefaultObservationFunction__())
self.reward_function = ecole.data.parse(
reward_function, self.__DefaultRewardFunction__())
self.information_function = ecole.data.parse(
information_function, self.__DefaultInformationFunction__())
self.scip_params = scip_params if scip_params is not None else {}
self.model = None
self.dynamics = self.__Dynamics__(**dynamics_kwargs)
self.can_transition = False
self.random_engine = ecole.spawn_random_engine()
def __init__(self,
observation_function="default",
reward_function="default",
information_function="default",
scip_params=None,
**dynamics_kwargs) -> None:
"""Create a new environment object.
Parameters
----------
observation_function:
An object of type :py:class:`~ecole.observation.ObservationFunction` used to custotize what
observation are returned in :meth:`reset` and :meth:`step`.
reward_function:
An object of type :py:class:`~ecole.reward.RewardFunction` used to customize what reward
are returned in :meth:`reset` and :meth:`step`.
information_function:
An object of type :py:class:`~ecole.information.InformationFunction` used to customize what
additional information are returned in :meth:`reset` and :meth:`step`.
scip_params:
Parameters set on the underlying :py:class:`~ecole.scip.Model` on every episode.
**dynamics_kwargs:
Other arguments are passed to the constructor of the :py:class:`~ecole.typing.Dynamics`.
"""
self.observation_function = ecole.data.parse(
observation_function, self.__DefaultObservationFunction__())
self.reward_function = ecole.data.parse(
reward_function, self.__DefaultRewardFunction__())
self.information_function = ecole.data.parse(
information_function, self.__DefaultInformationFunction__())
self.scip_params = scip_params if scip_params is not None else {}
self.model = None
self.dynamics = self.__Dynamics__(**dynamics_kwargs)
self.can_transition = False
self.random_engine = ecole.spawn_random_engine()
def test_spawn_engine():
"""Successive random engines are different"""
random_engine_1 = ecole.spawn_random_engine()
random_engine_2 = ecole.spawn_random_engine()
assert random_engine_1 != random_engine_2