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)