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feat: have ak.to_parquet create parent directories when necessary #3771

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feat: have ak.to_parquet create parent directories when necessary #3771

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8e63544
Initial attempt - one line with fs.mkdirs
Dec 16, 2025
92a359c
style: pre-commit fixes
pre-commit-ci[bot] Dec 16, 2025
545405b
Bug fix: Create directories containing file, not a directory with nam…
Jan 6, 2026
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4 changes: 4 additions & 0 deletions src/awkward/operations/ak_to_parquet.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@

from collections.abc import Mapping, Sequence
from os import fsdecode
from pathlib import Path

import fsspec

Expand Down Expand Up @@ -416,6 +417,9 @@ def parquet_columns(specifier, only=None):
) from None

fs, destination = fsspec.core.url_to_fs(destination, **(storage_options or {}))
# Create directories in which we write files, if necessary
parent_path = str(Path(destination).parent)
fs.mkdirs(parent_path, exist_ok=True)
metalist = []
with pyarrow_parquet.ParquetWriter(
destination,
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