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# Copyright (c) 2017-2026 Juancarlo Añez (apalala@gmail.com)
# SPDX-License-Identifier: BSD-4-Clause
from __future__ import annotations
from datetime import UTC, datetime
from pathlib import Path
def iso_timestamp() -> str:
"""
Returns an ISO 8601 string with UTC timezone (Z).
Example: '2026-02-15T22-15-01Z'
"""
now = datetime.now(UTC)
isostr = now.isoformat(timespec='seconds')
return isostr.replace(':', '-').replace('+00-00', 'Z')
def iso_logpath(prefix: str, basdir: str = "log", suffix='.log') -> Path:
"""Helper to generate a pathlib.Path using the ISO timestamp."""
ts = iso_timestamp()
logdir = Path(basdir)
logdir.mkdir(parents=True, exist_ok=True)
suffix = suffix if suffix.startswith('.') else '.' + suffix
return logdir / f"{prefix}_{ts}{suffix}"
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