All pull requests

Pull requests

• Stop VecNormalize rewriting the observation space of the env it wraps

  LLM generated
  #2286·DenisDrobyshev opened Sep 11, 2026·

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• Fix missing header when Monitor appends to a new file

  LLM generated
  #2283·yurekami opened Sep 4, 2026·

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• Secure deserialization (.load()) by default

  #2264·araffin opened Jun 19, 2026Member·

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  20

• docs: warn against using Gymnasium FrameStackObservation for image observations

  #2258·midhunxavier opened May 27, 2026·

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• Render initial state in evaluate_policy (Fixes #1692)

  #2257·midhunxavier opened May 26, 2026·

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• Add opt-in tanh squashing for DiagGaussianDistribution mean actions

  LLM generated
  #2249·cgliner opened May 5, 2026·

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• Fix load path handling for zip files

  PR template not filled
  #2239·Xenios91 opened Apr 13, 2026·

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• WIP: Beta distribution support for PPO

  #2228·araffin opened Mar 13, 2026Member·

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• Add PoolVecEnv support and update imports across the codebase

  #2204·drl-test opened Dec 13, 2025·

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• Add MPS Backend

  #2203·oursland opened Dec 13, 2025·

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• Add PAL to approximate Prioritized Experience Replay

  #2199·bilelsgh opened Dec 5, 2025·

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• Fix: Add close() method to BaseAlgorithm to prevent memory leaks

  Maintainers on vacation
  #2193·RPalmr opened Nov 19, 2025·

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• Add check_vecenv function for VecEnv validation similar to env_checker

  #2178·araffin with CopilotAI opened Sep 26, 2025·

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• Add Custom FrozenLakePlus Environment with Dynamic Slipperiness and Training/Evaluation Scripts

  #2148·llDanieLll opened Jun 16, 2025·

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• use lerp for polyak updates

  #2136·ClashLuke opened May 12, 2025·

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• Optional BatchNorm integration in NatureCNN

  #2132·Mahsarnzh opened May 6, 2025·

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• Speedup handling of terminal observations

  #2086·araffin opened Feb 17, 2025Member·

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• Fix tests for mps support

  mac os
  #2005·deathcoder opened Sep 14, 2024·

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• Recalculate Returns and Advantages After Callback to Ensure Reward Consistency (common/on_policy_algorithm.py)

  PR template not filled
  #2000·mhyrzt opened Sep 7, 2024·

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• Add precommit config yaml and fix typos automatically

  PR template not filled
  #1979·cschindlbeck opened Jul 26, 2024Contributor·

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• proposed fix for RunningMeanStd overflow

  #1954·spiglerg opened Jun 29, 2024·

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• Weights only param

  #1902·markscsmith opened Apr 19, 2024Contributor·

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• Fix missing seed / option args in dummy and subproc vec_env resets during stepping

  #1805·npit opened Jan 11, 2024Contributor·

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• Prioritized experience replay

  #1622·AlexPasqua opened Jul 23, 2023Contributor·

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  42

• Fix Framestack obs env_checker

  #1574·corentinlger opened Jun 26, 2023Contributor·

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  4