script.py

### This is example of the script that will be run in the test environment.

### You can change the rest of the code to define and test your solution.
### However, you should not change the signature of the provided function.
### The script saves "submission.json" file in the current directory.
### You can use any additional files and subdirectories to organize your code.

from pathlib import Path
from tqdm import tqdm
import json
import numpy as np
from datasets import load_dataset
from typing import Dict
from joblib import Parallel, delayed

def empty_solution(sample):
    '''Return a minimal valid solution, i.e. 2 vertices and 1 edge.'''
    return np.zeros((2,3)), [(0, 1)]

def predict_wireframe_safely(sample):
    pred_vertices, pred_edges = empty_solution(sample)
    pred_edges  = [(int(a), int(b)) for a, b in pred_edges] # to remove possible np.int64
    return pred_vertices, pred_edges, sample['order_id']

class Sample(Dict):
    def pick_repr_data(self, x):
        if hasattr(x, 'shape'):
            return x.shape
        if isinstance(x, (str, float, int)):
            return x
        if isinstance(x, list):
            return [type(x[0])] if len(x) > 0 else []
        return type(x)

    def __repr__(self):
        # return str({k: v.shape if hasattr(v, 'shape') else [type(v[0])] if isinstance(v, list) else type(v) for k,v in self.items()})
        return str({k: self.pick_repr_data(v) for k,v in self.items()})
    
import json
if __name__ == "__main__":
    print ("------------ Loading dataset------------ ")
    param_path = Path('params.json')
    print(param_path)
    with param_path.open() as f:
        params = json.load(f)
    print(params)
    import os
    
    print('pwd:')
    os.system('pwd')
    print(os.system('ls -lahtr'))
    print('/tmp/data/')
    print(os.system('ls -lahtr /tmp/data/'))
    print('/tmp/data/data')
    print(os.system('ls -lahtrR /tmp/data/data'))
    

    data_path_test_server = Path('/tmp/data')
    data_path_local = Path().home() / '.cache/huggingface/datasets/usm3d___hoho22k_2026_test_x_anon/'

    if data_path_test_server.exists():
        # data_path = data_path_test_server
        TEST_ENV = True
    else: 
        # data_path = data_path_local
        TEST_ENV = False
        from huggingface_hub import snapshot_download 
        _ = snapshot_download(
            repo_id=params['dataset'],
            local_dir="/tmp/data",
            repo_type="dataset",
        )
    data_path = data_path_test_server
    
    
    print(data_path)

    # dataset = load_dataset(params['dataset'], trust_remote_code=True, use_auth_token=params['token'])
    # data_files = {
    #     "validation": [str(p) for p in [*data_path.rglob('*validation*.arrow')]+[*data_path.rglob('*public*/**/*.tar')]],
    #     "test": [str(p) for p in [*data_path.rglob('*test*.arrow')]+[*data_path.rglob('*private*/**/*.tar')]],
    # }
    data_files = {
        "validation": [str(p) for p in data_path.rglob('*public*/**/*.tar')],
        "test": [str(p) for p in data_path.rglob('*private*/**/*.tar')],
    }
    print(data_files)
    dataset = load_dataset(
        str(data_path / 'hoho22k_2026_test_x_anon.py'),
        data_files=data_files,
        trust_remote_code=True,
        writer_batch_size=100
    )

    # if TEST_ENV:
    # dataset = load_dataset(
    #     "webdataset", 
    #     data_files=data_files,
    #     trust_remote_code=True,
    #     # streaming=True
    # )
    print('load with webdataset')
    # else:
        
    #     dataset = load_dataset(
    #         "arrow", 
    #         data_files=data_files,
    #         trust_remote_code=True,
    #         # streaming=True
    #     )
    #     print('load with arrow')
    

    print(dataset, flush=True)
    # dataset = load_dataset('webdataset', data_files={)
    
    print('------------ Now you can do your solution ---------------')
    solution = []
    for subset_name in dataset:
        print (f"Predicitng on {subset_name}")
        preds = Parallel(n_jobs=-1, prefer="processes")(
            delayed(predict_wireframe_safely)(a) for a in tqdm(dataset[subset_name])
        )
        print ("Converting")
        for p in preds:
            pred_vertices, pred_edges, order_id = p
            print (f'{order_id}: {len(pred_vertices)} verts, {len(pred_edges)} edges')
            solution.append({
                            'order_id': order_id, 
                            'wf_vertices': pred_vertices.tolist(),
                            'wf_edges': pred_edges
                        })
    print('------------ Saving results ---------------')
    with open("submission.json", "w") as f:
        json.dump(solution, f)

    print("------------ Done ------------ ")