ARCLE - ARC Learning Environment

Overview

ARCLE is a reinforcement‑learning environment for training Abstraction and Reasoning Corpus and similar datasets, built on Farama’s Gymnasium.

Environments

ARCLE includes the following environments:

• RawARCEnv: Environment that only supports coloring, resizing answer grid, and submission actions.
• ARCEnv: Implements ARC’s browser‑test interface, supporting coloring, flood‑fill, copy, and paste operations.
• O2ARCv2Env: Implements the O2ARCv2 interface, extending ARCEnv with move, rotate, flip, crop, etc.

Version History

0.2.6

• Environment changes:
  • O2ARCv2Env now accessible via O2ARCEnv or O2ARCEnv‑v2.
  • Unified observation type to np.int8.
  • Unified observation space to Box or MultiBinary dict for proper flattening.
  • Removed over‑strict constraints from AbstractARCEnv; users only need to override create_operations.
• Added action wrappers (BBoxWrapper, PointWrapper) to switch selection mode.
• Loader now supports configurable RNG.
• Organized examples.
• Fixed terminated not being emitted when max_trial is infinite (-1).

0.2.5

• Python 3.8 support.
• Environment changes:
  • Renamed ARCEnv to RawARCEnv.
  • Removed MiniARCEnv; use RawARCEnv with loader=MiniARCLoader().
  • Added new ARCEnv with action space matching ARC test interface.
  • All environments fully observable; state‑related variables now in current_state dict.
  • Added n‑trial mode via gym.make(); -1 denotes unlimited trials.
  • Customizable Submit action.
• Fixed boundary issues for flood‑fill, paste, copy.

0.2.2

• Fixed issue where total reward (all‑or‑nothing) was only given on submission.

0.2.1

• O2ARCv2Env‑v0:
  • Changed ResizeGrid to CropGrid.
  • Enforced FloodFill to select a single pixel.
  • Treated black pixels as background for CopyI, CopyO, Paste.
  • action[selection] now accepts integers.

0.2.0

• Renamed ArcEnv‑v0 and MiniArcEnv‑v0 to ARCEnv‑v0 and MiniArcEnv‑v0.
• Added O2ARCv2Env‑v0.
• Added O2ARC actions:
  • Uses selection and selected.
  • Supports coloring, flood‑fill, move, rotate, flip, copy, paste, clipboard.

0.1.1

• Updated imagery.
• Fixed minor bugs.

0.1.0

• Initial build.
• Released ArcEnv‑v0 and MiniArcEnv‑v0.