Source code for langchain_experimental.rl_chain.vw_logger
from os import PathLike
from pathlib import Path
from typing import Optional, Union
[docs]class VwLogger:
"""Vowpal Wabbit custom logger."""
[docs] def __init__(self, path: Optional[Union[str, PathLike]]):
self.path = Path(path) if path else None
if self.path:
self.path.parent.mkdir(parents=True, exist_ok=True)
[docs] def log(self, vw_ex: str) -> None:
if self.path:
with open(self.path, "a") as f:
f.write(f"{vw_ex}\n\n")
[docs] def logging_enabled(self) -> bool:
return bool(self.path)