Upload wit_create_meta.py

wit_create_meta.py

@@ -0,0 +1,42 @@
+from pathlib import Path
+
+import pandas as pd
+import torch
+import ujson
+import webdataset as wds
+from tqdm import tqdm
+
+
+def load_json(json):
+    return ujson.loads(json)
+
+
+load_map = {
+    'json': load_json,
+}
+
+
+def get_glob(path):
+    return sorted(Path('.').absolute().glob(path))
+
+
+def chunker(l, n):
+    for i in range(0, len(l), n):
+        yield l[i:i + n]
+
+
+def func(glob_path, combine_all=True):
+    glob = get_glob(glob_path)
+
+    for file in tqdm(glob, position=0):
+        ds = wds.WebDataset(str(file)).map_dict(**load_map).to_tuple('json')
+
+        metas = pd.DataFrame([meta[0]
+                             for meta in tqdm(ds, position=1, leave=False)])
+
+        metas.to_parquet(f'{file.stem}.parquet')
+
+    if combine_all:
+        combined = pd.concat(pd.read_parquet(
+            f'{file.stem}.parquet') for file in tqdm(glob))
+        combined.to_parquet('combined_meta.parquet')