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< p class = "caption" role = "heading" > < span class = "caption-text" > Introduction< / span > < / p >
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< li class = "toctree-l1 has-children" > < a class = "reference internal" href = "../spaces/" > Spaces< / a > < input class = "toctree-checkbox" id = "toctree-checkbox-1" name = "toctree-checkbox-1" role = "switch" type = "checkbox" / > < label for = "toctree-checkbox-1" > < div class = "visually-hidden" > Toggle child pages in navigation< / div > < i class = "icon" > < svg > < use href = "#svg-arrow-right" > < / use > < / svg > < / i > < / label > < ul >
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< li class = "toctree-l1 has-children" > < a class = "reference internal" href = "../../environments/atari/" > Atari< / a > < input class = "toctree-checkbox" id = "toctree-checkbox-2" name = "toctree-checkbox-2" role = "switch" type = "checkbox" / > < label for = "toctree-checkbox-2" > < div class = "visually-hidden" > Toggle child pages in navigation< / div > < i class = "icon" > < svg > < use href = "#svg-arrow-right" > < / use > < / svg > < / i > < / label > < ul >
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< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/adventure/" > Adventure< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/air_raid/" > Air Raid< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/alien/" > Alien< / a > < / li >
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< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/pitfall/" > Pitfall< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/pong/" > Pong< / a > < / li >
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< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/private_eye/" > PrivateEye< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/qbert/" > Qbert< / a > < / li >
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< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/road_runner/" > Road Runner< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/robotank/" > Robot Tank< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/seaquest/" > Seaquest< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/skiing/" > Skiings< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/solaris/" > Solaris< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/space_invaders/" > SpaceInvaders< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/star_gunner/" > StarGunner< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/tennis/" > Tennis< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/time_pilot/" > TimePilot< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/tutankham/" > Tutankham< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/up_n_down/" > Up n’ < / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/venture/" > Venture< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/video_pinball/" > Video Pinball< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/wizard_of_wor/" > Wizard of Wor< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/atari/zaxxon/" > Zaxxon< / a > < / li >
< / ul >
< / li >
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< li class = "toctree-l1 has-children" > < a class = "reference internal" href = "../../environments/mujoco/" > MuJoCo< / a > < input class = "toctree-checkbox" id = "toctree-checkbox-3" name = "toctree-checkbox-3" role = "switch" type = "checkbox" / > < label for = "toctree-checkbox-3" > < div class = "visually-hidden" > Toggle child pages in navigation< / div > < i class = "icon" > < svg > < use href = "#svg-arrow-right" > < / use > < / svg > < / i > < / label > < ul >
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< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/ant/" > Ant< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/half_cheetah/" > Half Cheetah< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/hopper/" > Hopper< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/humanoid_standup/" > Humanoid Standup< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/humanoid/" > Humanoid< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/inverted_double_pendulum/" > Inverted Double Pendulum< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/inverted_pendulum/" > Inverted Pendulum< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/reacher/" > Reacher< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/swimmer/" > Swimmer< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/mujoco/walker2d/" > Walker2D< / a > < / li >
< / ul >
< / li >
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< li class = "toctree-l1 has-children" > < a class = "reference internal" href = "../../environments/toy_text/" > Toy Text< / a > < input class = "toctree-checkbox" id = "toctree-checkbox-4" name = "toctree-checkbox-4" role = "switch" type = "checkbox" / > < label for = "toctree-checkbox-4" > < div class = "visually-hidden" > Toggle child pages in navigation< / div > < i class = "icon" > < svg > < use href = "#svg-arrow-right" > < / use > < / svg > < / i > < / label > < ul >
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< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/toy_text/blackjack/" > Blackjack< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/toy_text/taxi/" > Taxi< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/toy_text/cliff_walking/" > Cliff Walking< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/toy_text/frozen_lake/" > Frozen Lake< / a > < / li >
< / ul >
< / li >
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< li class = "toctree-l1 has-children" > < a class = "reference internal" href = "../../environments/classic_control/" > Classic Control< / a > < input class = "toctree-checkbox" id = "toctree-checkbox-5" name = "toctree-checkbox-5" role = "switch" type = "checkbox" / > < label for = "toctree-checkbox-5" > < div class = "visually-hidden" > Toggle child pages in navigation< / div > < i class = "icon" > < svg > < use href = "#svg-arrow-right" > < / use > < / svg > < / i > < / label > < ul >
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< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/classic_control/acrobot/" > Acrobot< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/classic_control/cart_pole/" > Cart Pole< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/classic_control/mountain_car_continuous/" > Mountain Car Continuous< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/classic_control/mountain_car/" > Mountain Car< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/classic_control/pendulum/" > Pendulum< / a > < / li >
< / ul >
< / li >
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< li class = "toctree-l1 has-children" > < a class = "reference internal" href = "../../environments/box2d/" > Box2D< / a > < input class = "toctree-checkbox" id = "toctree-checkbox-6" name = "toctree-checkbox-6" role = "switch" type = "checkbox" / > < label for = "toctree-checkbox-6" > < div class = "visually-hidden" > Toggle child pages in navigation< / div > < i class = "icon" > < svg > < use href = "#svg-arrow-right" > < / use > < / svg > < / i > < / label > < ul >
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< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/box2d/bipedal_walker/" > Bipedal Walker< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/box2d/car_racing/" > Car Racing< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "../../environments/box2d/lunar_lander/" > Lunar Lander< / a > < / li >
< / ul >
< / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "../../environments/third_party_environments/" > Third Party Environments< / a > < / li >
< / ul >
< p class = "caption" role = "heading" > < span class = "caption-text" > Tutorials< / span > < / p >
< ul >
< li class = "toctree-l1" > < a class = "reference internal" href = "../../content/environment_creation/" > Make your own custom environment< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "../../content/vectorising/" > Vectorising your environments< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "../../content/handling_timelimits/" > Handling Time Limits< / a > < / li >
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< / ul >
< p class = "caption" role = "heading" > < span class = "caption-text" > Development< / span > < / p >
< ul >
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< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/Farama-Foundation/Gymnasium" > Github< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference external" href = "https://farama.org/donations" > Donate< / a > < / li >
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< section id = "vector" >
< h1 > Vector< a class = "headerlink" href = "#vector" title = "Permalink to this heading" > #< / a > < / h1 >
< dl class = "py function" >
< dt class = "sig sig-object py" id = "gymnasium.vector.make" >
< span class = "sig-prename descclassname" > < span class = "pre" > gymnasium.vector.< / span > < / span > < span class = "sig-name descname" > < span class = "pre" > make< / span > < / span > < span class = "sig-paren" > (< / span > < em class = "sig-param" > < span class = "n" > < span class = "pre" > id< / span > < / span > < span class = "p" > < span class = "pre" > :< / span > < / span > < span class = "w" > < / span > < span class = "n" > < span class = "pre" > str< / span > < / span > < / em > , < em class = "sig-param" > < span class = "n" > < span class = "pre" > num_envs< / span > < / span > < span class = "p" > < span class = "pre" > :< / span > < / span > < span class = "w" > < / span > < span class = "n" > < span class = "pre" > int< / span > < / span > < span class = "w" > < / span > < span class = "o" > < span class = "pre" > =< / span > < / span > < span class = "w" > < / span > < span class = "default_value" > < span class = "pre" > 1< / span > < / span > < / em > , < em class = "sig-param" > < span class = "n" > < span class = "pre" > asynchronous< / span > < / span > < span class = "p" > < span class = "pre" > :< / span > < / span > < span class = "w" > < / span > < span class = "n" > < span class = "pre" > bool< / span > < / span > < span class = "w" > < / span > < span class = "o" > < span class = "pre" > =< / span > < / span > < span class = "w" > < / span > < span class = "default_value" > < span class = "pre" > True< / span > < / span > < / em > , < em class = "sig-param" > < span class = "n" > < span class = "pre" > wrappers< / span > < / span > < span class = "p" > < span class = "pre" > :< / span > < / span > < span class = "w" > < / span > < span class = "n" > < span class = "pre" > Optional< / span > < span class = "p" > < span class = "pre" > [< / span > < / span > < span class = "pre" > Union< / span > < span class = "p" > < span class = "pre" > [< / span > < / span > < span class = "pre" > callable< / span > < span class = "p" > < span class = "pre" > ,< / span > < / span > < span class = "w" > < / span > < span class = "pre" > List< / span > < span class = "p" > < span class = "pre" > [< / span > < / span > < span class = "pre" > callable< / span > < span class = "p" > < span class = "pre" > ]< / span > < / span > < span class = "p" > < span class = "pre" > ]< / span > < / span > < span class = "p" > < span class = "pre" > ]< / span > < / span > < / span > < span class = "w" > < / span > < span class = "o" > < span class = "pre" > =< / span > < / span > < span class = "w" > < / span > < span class = "default_value" > < span class = "pre" > None< / span > < / span > < / em > , < em class = "sig-param" > < span class = "n" > < span class = "pre" > disable_env_checker< / span > < / span > < span class = "p" > < span class = "pre" > :< / span > < / span > < span class = "w" > < / span > < span class = "n" > < span class = "pre" > Optional< / span > < span class = "p" > < span class = "pre" > [< / span > < / span > < span class = "pre" > bool< / span > < span class = "p" > < span class = "pre" > ]< / span > < / span > < / span > < span class = "w" > < / span > < span class = "o" > < span class = "pre" > =< / span > < / span > < span class = "w" > < / span > < span class = "default_value" > < span class = "pre" > None< / span > < / span > < / em > , < em class = "sig-param" > < span class = "o" > < span class = "pre" > **< / span > < / span > < span class = "n" > < span class = "pre" > kwargs< / span > < / span > < / em > < span class = "sig-paren" > )< / span > < span class = "sig-return" > < span class = "sig-return-icon" > → < / span > < span class = "sig-return-typehint" > < span class = "pre" > VectorEnv< / span > < / span > < / span > < a class = "headerlink" href = "#gymnasium.vector.make" title = "Permalink to this definition" > #< / a > < / dt >
< dd > < p > Create a vectorized environment from multiple copies of an environment, from its id.< / p >
< p > Example:< / p >
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< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "gp" > > > > < / span > < span class = "kn" > import< / span > < span class = "nn" > gymnasium< / span > < span class = "k" > as< / span > < span class = "nn" > gym< / span >
< span class = "gp" > > > > < / span > < span class = "n" > env< / span > < span class = "o" > =< / span > < span class = "n" > gym< / span > < span class = "o" > .< / span > < span class = "n" > vector< / span > < span class = "o" > .< / span > < span class = "n" > make< / span > < span class = "p" > (< / span > < span class = "s1" > ' CartPole-v1' < / span > < span class = "p" > ,< / span > < span class = "n" > num_envs< / span > < span class = "o" > =< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
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< span class = "gp" > > > > < / span > < span class = "n" > env< / span > < span class = "o" > .< / span > < span class = "n" > reset< / span > < span class = "p" > ()< / span >
< span class = "go" > array([[-0.04456399, 0.04653909, 0.01326909, -0.02099827],< / span >
< span class = "go" > [ 0.03073904, 0.00145001, -0.03088818, -0.03131252],< / span >
< span class = "go" > [ 0.03468829, 0.01500225, 0.01230312, 0.01825218]],< / span >
< span class = "go" > dtype=float32)< / span >
< / pre > < / div >
< / div >
< dl class = "field-list simple" >
< dt class = "field-odd" > Parameters< span class = "colon" > :< / span > < / dt >
< dd class = "field-odd" > < ul class = "simple" >
< li > < p > < strong > id< / strong > – < / p > < / li >
< li > < p > < strong > num_envs< / strong > – < / p > < / li >
< li > < p > < strong > asynchronous< / strong > – < cite > True< / cite > , wraps the environments in an < code class = "xref py py-class docutils literal notranslate" > < span class = "pre" > AsyncVectorEnv< / span > < / code > (which uses < a href = "#id1" > < span class = "problematic" id = "id2" > `multiprocessing`_< / span > < / a > to run the environments in parallel). If < code class = "docutils literal notranslate" > < span class = "pre" > False< / span > < / code > , wraps the environments in a < code class = "xref py py-class docutils literal notranslate" > < span class = "pre" > SyncVectorEnv< / span > < / code > .< / p > < / li >
< li > < p > < strong > wrappers< / strong > – < code class = "docutils literal notranslate" > < span class = "pre" > None< / span > < / code > , then apply the wrappers to each internal environment during creation.< / p > < / li >
< li > < p > < strong > disable_env_checker< / strong > – < cite > disable_env_checker< / cite > parameter
(that is by default False), otherwise will run according to this argument (True = not run, False = run)< / p > < / li >
< li > < p > < strong > **kwargs< / strong > – < cite > gym.make< / cite > < / p > < / li >
< / ul >
< / dd >
< dt class = "field-even" > Returns< span class = "colon" > :< / span > < / dt >
< dd class = "field-even" > < p > < strong > The vectorized environment.< / strong > < / p >
< / dd >
< / dl >
< / dd > < / dl >
< section id = "vectorenv" >
< h2 > VectorEnv< a class = "headerlink" href = "#vectorenv" title = "Permalink to this heading" > #< / a > < / h2 >
< dl class = "py attribute" >
< dt class = "sig sig-object py" id = "gymnasium.vector.VectorEnv.action_space" >
< span class = "sig-prename descclassname" > < span class = "pre" > gymnasium.vector.VectorEnv.< / span > < / span > < span class = "sig-name descname" > < span class = "pre" > action_space< / span > < / span > < a class = "headerlink" href = "#gymnasium.vector.VectorEnv.action_space" title = "Permalink to this definition" > #< / a > < / dt >
< dd > < p > The (batched) action space. The input actions of < cite > step< / cite > must be valid elements of < cite > action_space< / cite > .:< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > =< / span > < span class = "n" > gymnasium< / span > < span class = "o" > .< / span > < span class = "n" > vector< / span > < span class = "o" > .< / span > < span class = "n" > make< / span > < span class = "p" > (< / span > < span class = "s2" > " CartPole-v1" < / span > < span class = "p" > ,< / span > < span class = "n" > num_envs< / span > < span class = "o" > =< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
< span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > .< / span > < span class = "n" > action_space< / span >
< span class = "go" > MultiDiscrete([2 2 2])< / span >
< / pre > < / div >
< / div >
< / dd > < / dl >
< dl class = "py attribute" >
< dt class = "sig sig-object py" id = "gymnasium.vector.VectorEnv.observation_space" >
< span class = "sig-prename descclassname" > < span class = "pre" > gymnasium.vector.VectorEnv.< / span > < / span > < span class = "sig-name descname" > < span class = "pre" > observation_space< / span > < / span > < a class = "headerlink" href = "#gymnasium.vector.VectorEnv.observation_space" title = "Permalink to this definition" > #< / a > < / dt >
< dd > < p > The (batched) observation space. The observations returned by < cite > reset< / cite > and < cite > step< / cite > are valid elements of < cite > observation_space< / cite > .:< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > =< / span > < span class = "n" > gymnasium< / span > < span class = "o" > .< / span > < span class = "n" > vector< / span > < span class = "o" > .< / span > < span class = "n" > make< / span > < span class = "p" > (< / span > < span class = "s2" > " CartPole-v1" < / span > < span class = "p" > ,< / span > < span class = "n" > num_envs< / span > < span class = "o" > =< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
< span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > .< / span > < span class = "n" > observation_space< / span >
< span class = "go" > Box([[-4.8 ...]], [[4.8 ...]], (3, 4), float32)< / span >
< / pre > < / div >
< / div >
< / dd > < / dl >
< dl class = "py attribute" >
< dt class = "sig sig-object py" id = "gymnasium.vector.VectorEnv.single_action_space" >
< span class = "sig-prename descclassname" > < span class = "pre" > gymnasium.vector.VectorEnv.< / span > < / span > < span class = "sig-name descname" > < span class = "pre" > single_action_space< / span > < / span > < a class = "headerlink" href = "#gymnasium.vector.VectorEnv.single_action_space" title = "Permalink to this definition" > #< / a > < / dt >
< dd > < p > The action space of an environment copy.:< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > =< / span > < span class = "n" > gymnasium< / span > < span class = "o" > .< / span > < span class = "n" > vector< / span > < span class = "o" > .< / span > < span class = "n" > make< / span > < span class = "p" > (< / span > < span class = "s2" > " CartPole-v1" < / span > < span class = "p" > ,< / span > < span class = "n" > num_envs< / span > < span class = "o" > =< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
< span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > .< / span > < span class = "n" > single_action_space< / span >
< span class = "go" > Discrete(2)< / span >
< / pre > < / div >
< / div >
< / dd > < / dl >
< dl class = "py attribute" >
< dt class = "sig sig-object py" id = "gymnasium.vector.VectorEnv.single_observation_space" >
< span class = "sig-prename descclassname" > < span class = "pre" > gymnasium.vector.VectorEnv.< / span > < / span > < span class = "sig-name descname" > < span class = "pre" > single_observation_space< / span > < / span > < a class = "headerlink" href = "#gymnasium.vector.VectorEnv.single_observation_space" title = "Permalink to this definition" > #< / a > < / dt >
< dd > < p > The observation space of an environment copy.:< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > =< / span > < span class = "n" > gymnasium< / span > < span class = "o" > .< / span > < span class = "n" > vector< / span > < span class = "o" > .< / span > < span class = "n" > make< / span > < span class = "p" > (< / span > < span class = "s2" > " CartPole-v1" < / span > < span class = "p" > ,< / span > < span class = "n" > num_envs< / span > < span class = "o" > =< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
< span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > .< / span > < span class = "n" > single_action_space< / span >
< span class = "go" > Box([-4.8 ...], [4.8 ...], (4,), float32)< / span >
< / pre > < / div >
< / div >
< / dd > < / dl >
< section id = "reset" >
< h3 > Reset< a class = "headerlink" href = "#reset" title = "Permalink to this heading" > #< / a > < / h3 >
< dl class = "py method" >
< dt class = "sig sig-object py" id = "gymnasium.vector.VectorEnv.reset" >
< span class = "sig-prename descclassname" > < span class = "pre" > VectorEnv.< / span > < / span > < span class = "sig-name descname" > < span class = "pre" > reset< / span > < / span > < span class = "sig-paren" > (< / span > < em class = "sig-param" > < span class = "o" > < span class = "pre" > *< / span > < / span > < / em > , < em class = "sig-param" > < span class = "n" > < span class = "pre" > seed< / span > < / span > < span class = "p" > < span class = "pre" > :< / span > < / span > < span class = "w" > < / span > < span class = "n" > < span class = "pre" > Optional< / span > < span class = "p" > < span class = "pre" > [< / span > < / span > < span class = "pre" > Union< / span > < span class = "p" > < span class = "pre" > [< / span > < / span > < span class = "pre" > int< / span > < span class = "p" > < span class = "pre" > ,< / span > < / span > < span class = "w" > < / span > < span class = "pre" > List< / span > < span class = "p" > < span class = "pre" > [< / span > < / span > < span class = "pre" > int< / span > < span class = "p" > < span class = "pre" > ]< / span > < / span > < span class = "p" > < span class = "pre" > ]< / span > < / span > < span class = "p" > < span class = "pre" > ]< / span > < / span > < / span > < span class = "w" > < / span > < span class = "o" > < span class = "pre" > =< / span > < / span > < span class = "w" > < / span > < span class = "default_value" > < span class = "pre" > None< / span > < / span > < / em > , < em class = "sig-param" > < span class = "n" > < span class = "pre" > options< / span > < / span > < span class = "p" > < span class = "pre" > :< / span > < / span > < span class = "w" > < / span > < span class = "n" > < span class = "pre" > Optional< / span > < span class = "p" > < span class = "pre" > [< / span > < / span > < span class = "pre" > dict< / span > < span class = "p" > < span class = "pre" > ]< / span > < / span > < / span > < span class = "w" > < / span > < span class = "o" > < span class = "pre" > =< / span > < / span > < span class = "w" > < / span > < span class = "default_value" > < span class = "pre" > None< / span > < / span > < / em > < span class = "sig-paren" > )< / span > < a class = "headerlink" href = "#gymnasium.vector.VectorEnv.reset" title = "Permalink to this definition" > #< / a > < / dt >
< dd > < p > Reset all parallel environments and return a batch of initial observations.< / p >
< dl class = "field-list simple" >
< dt class = "field-odd" > Parameters< span class = "colon" > :< / span > < / dt >
< dd class = "field-odd" > < ul class = "simple" >
< li > < p > < strong > seed< / strong > – < / p > < / li >
< li > < p > < strong > options< / strong > – < / p > < / li >
< / ul >
< / dd >
< dt class = "field-even" > Returns< span class = "colon" > :< / span > < / dt >
< dd class = "field-even" > < p > < strong > A batch of observations from the vectorized environment.< / strong > < / p >
< / dd >
< / dl >
< / dd > < / dl >
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< div class = "highlight-python notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "gp" > > > > < / span > < span class = "kn" > import< / span > < span class = "nn" > gymnasium< / span > < span class = "k" > as< / span > < span class = "nn" > gym< / span >
< span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > =< / span > < span class = "n" > gym< / span > < span class = "o" > .< / span > < span class = "n" > vector< / span > < span class = "o" > .< / span > < span class = "n" > make< / span > < span class = "p" > (< / span > < span class = "s2" > " CartPole-v1" < / span > < span class = "p" > ,< / span > < span class = "n" > num_envs< / span > < span class = "o" > =< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
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< span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > .< / span > < span class = "n" > reset< / span > < span class = "p" > ()< / span >
< span class = "go" > (array([[-0.02240574, -0.03439831, -0.03904812, 0.02810693],< / span >
< span class = "go" > [ 0.01586068, 0.01929009, 0.02394426, 0.04016077],< / span >
< span class = "go" > [-0.01314174, 0.03893502, -0.02400815, 0.0038326 ]],< / span >
< span class = "go" > dtype=float32), {})< / span >
< / pre > < / div >
< / div >
< / section >
< section id = "step" >
< h3 > Step< a class = "headerlink" href = "#step" title = "Permalink to this heading" > #< / a > < / h3 >
< dl class = "py method" >
< dt class = "sig sig-object py" id = "gymnasium.vector.VectorEnv.step" >
< span class = "sig-prename descclassname" > < span class = "pre" > VectorEnv.< / span > < / span > < span class = "sig-name descname" > < span class = "pre" > step< / span > < / span > < span class = "sig-paren" > (< / span > < em class = "sig-param" > < span class = "n" > < span class = "pre" > actions< / span > < / span > < / em > < span class = "sig-paren" > )< / span > < a class = "headerlink" href = "#gymnasium.vector.VectorEnv.step" title = "Permalink to this definition" > #< / a > < / dt >
< dd > < p > Take an action for each parallel environment.< / p >
< dl class = "field-list simple" >
< dt class = "field-odd" > Parameters< span class = "colon" > :< / span > < / dt >
< dd class = "field-odd" > < p > < strong > actions< / strong > – < a class = "reference internal" href = "#gymnasium.vector.VectorEnv.action_space" title = "gymnasium.vector.VectorEnv.action_space" > < code class = "xref py py-attr docutils literal notranslate" > < span class = "pre" > action_space< / span > < / code > < / a > Batch of actions.< / p >
< / dd >
< dt class = "field-even" > Returns< span class = "colon" > :< / span > < / dt >
< dd class = "field-even" > < p > < strong > Batch of< / strong > (< em > observations, rewards, terminated, truncated, infos) or (observations, rewards, dones, infos< / em > )< / p >
< / dd >
< / dl >
< / dd > < / dl >
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< div class = "highlight-python notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > =< / span > < span class = "n" > gym< / span > < span class = "o" > .< / span > < span class = "n" > vector< / span > < span class = "o" > .< / span > < span class = "n" > make< / span > < span class = "p" > (< / span > < span class = "s2" > " CartPole-v1" < / span > < span class = "p" > ,< / span > < span class = "n" > num_envs< / span > < span class = "o" > =< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
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< span class = "gp" > > > > < / span > < span class = "n" > envs< / span > < span class = "o" > .< / span > < span class = "n" > reset< / span > < span class = "p" > ()< / span >
< span class = "gp" > > > > < / span > < span class = "n" > actions< / span > < span class = "o" > =< / span > < span class = "n" > np< / span > < span class = "o" > .< / span > < span class = "n" > array< / span > < span class = "p" > ([< / span > < span class = "mi" > 1< / span > < span class = "p" > ,< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span > < span class = "mi" > 1< / span > < span class = "p" > ])< / span >
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< span class = "gp" > > > > < / span > < span class = "n" > observations< / span > < span class = "p" > ,< / span > < span class = "n" > rewards< / span > < span class = "p" > ,< / span > < span class = "n" > termination< / span > < span class = "p" > ,< / span > < span class = "n" > truncation< / span > < span class = "p" > ,< / span > < span class = "n" > infos< / span > < span class = "o" > =< / span > < span class = "n" > envs< / span > < span class = "o" > .< / span > < span class = "n" > step< / span > < span class = "p" > (< / span > < span class = "n" > actions< / span > < span class = "p" > )< / span >
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< span class = "gp" > > > > < / span > < span class = "n" > observations< / span >
< span class = "go" > array([[ 0.00122802, 0.16228443, 0.02521779, -0.23700266],< / span >
< span class = "go" > [ 0.00788269, -0.17490888, 0.03393489, 0.31735462],< / span >
< span class = "go" > [ 0.04918966, 0.19421194, 0.02938497, -0.29495203]],< / span >
< span class = "go" > dtype=float32)< / span >
< span class = "gp" > > > > < / span > < span class = "n" > rewards< / span >
< span class = "go" > array([1., 1., 1.])< / span >
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< span class = "gp" > > > > < / span > < span class = "n" > termination< / span >
< span class = "go" > array([False, False, False])< / span >
< span class = "gp" > > > > < / span > < span class = "n" > termination< / span >
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< span class = "go" > array([False, False, False])< / span >
< span class = "gp" > > > > < / span > < span class = "n" > infos< / span >
< span class = "go" > {}< / span >
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< li > < a class = "reference internal" href = "#gymnasium.vector.make" > < code class = "docutils literal notranslate" > < span class = "pre" > make()< / span > < / code > < / a > < / li >
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< li > < a class = "reference internal" href = "#vectorenv" > VectorEnv< / a > < ul >
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< li > < a class = "reference internal" href = "#gymnasium.vector.VectorEnv.action_space" > < code class = "docutils literal notranslate" > < span class = "pre" > gymnasium.vector.VectorEnv.action_space< / span > < / code > < / a > < / li >
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< li > < a class = "reference internal" href = "#reset" > Reset< / a > < ul >
< li > < a class = "reference internal" href = "#gymnasium.vector.VectorEnv.reset" > < code class = "docutils literal notranslate" > < span class = "pre" > VectorEnv.reset()< / span > < / code > < / a > < / li >
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< li > < a class = "reference internal" href = "#step" > Step< / a > < ul >
< li > < a class = "reference internal" href = "#gymnasium.vector.VectorEnv.step" > < code class = "docutils literal notranslate" > < span class = "pre" > VectorEnv.step()< / span > < / code > < / a > < / li >
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