add details in README

README.md

@@ -37,3 +37,43 @@ configs:
   - split: train
     path: data/train-*
 ---
+# **Codeset-Gym-Python**
+
+A gym for training code agents resolve real-world software issues. This version contains issues from Python repositories.
+
+---
+
+## Dataset Structure
+| Column | Type | Description |
+|-----|------|-------------|
+| `instance_id` | `str` | Formatted as `owner__repo-issueNumber` (e.g. `psf__requests-6091`) |
+| `repo` | `str` | `owner/repo` |
+| `patch` | `str` | Source-code diff that resolves the issue *(tests omitted)* |
+| `test_patch` | `str` | Diff of test files added/changed by the issue resolving commit  |
+| `base_commit` | `str` | Commit hash **before** the issue resolution |
+| `environment_setup_commit` | `str` | Commit hash of the resolved version, from which the environment was built |
+| `created_at` | `str` | ISO timestamp of the issue resolving commit |
+| `problem_statement` | `str` | Issue title + body |
+| `hints_text` | `str` | Concatenated Issue comments prior to the patch |
+| `version` | `str` | Environment version tags |
+| `FAIL_TO_PASS` | `List[str]` | A json list of strings that represent the set of tests resolved by the PR and tied to the issue resolution. |
+| `PASS_TO_PASS` | `List[str]` | A json list of strings that represent tests that should pass before and after the PR application. |
+---
+
+## Usage
+
+```python
+from datasets import load_dataset
+
+ds = load_dataset("codeset/codeset-gym-python", split="train")
+
+sample = ds[0]
+print(sample["problem_statement"])
+print(sample["patch"])
+```
+
+The dataset ships as a single `train` split.
+
+---
+
+Built by [Codeset](https://codeset.ai/)