mirror of
https://github.com/hwchase17/langchain.git
synced 2025-11-21 14:10:56 +00:00
a0c2281540
```python
"""python scripts/update_mypy_ruff.py"""
import glob
import tomllib
from pathlib import Path
import toml
import subprocess
import re
ROOT_DIR = Path(__file__).parents[1]
def main():
for path in glob.glob(str(ROOT_DIR / "libs/**/pyproject.toml"), recursive=True):
print(path)
with open(path, "rb") as f:
pyproject = tomllib.load(f)
try:
pyproject["tool"]["poetry"]["group"]["typing"]["dependencies"]["mypy"] = (
"^1.10"
)
pyproject["tool"]["poetry"]["group"]["lint"]["dependencies"]["ruff"] = (
"^0.5"
)
except KeyError:
continue
with open(path, "w") as f:
toml.dump(pyproject, f)
cwd = "/".join(path.split("/")[:-1])
completed = subprocess.run(
"poetry lock --no-update; poetry install --with typing; poetry run mypy . --no-color",
cwd=cwd,
shell=True,
capture_output=True,
text=True,
)
logs = completed.stdout.split("\n")
to_ignore = {}
for l in logs:
if re.match("^(.*)\:(\d+)\: error:.*\[(.*)\]", l):
path, line_no, error_type = re.match(
"^(.*)\:(\d+)\: error:.*\[(.*)\]", l
).groups()
if (path, line_no) in to_ignore:
to_ignore[(path, line_no)].append(error_type)
else:
to_ignore[(path, line_no)] = [error_type]
print(len(to_ignore))
for (error_path, line_no), error_types in to_ignore.items():
all_errors = ", ".join(error_types)
full_path = f"{cwd}/{error_path}"
try:
with open(full_path, "r") as f:
file_lines = f.readlines()
except FileNotFoundError:
continue
file_lines[int(line_no) - 1] = (
file_lines[int(line_no) - 1][:-1] + f" # type: ignore[{all_errors}]\n"
)
with open(full_path, "w") as f:
f.write("".join(file_lines))
subprocess.run(
"poetry run ruff format .; poetry run ruff --select I --fix .",
cwd=cwd,
shell=True,
capture_output=True,
text=True,
)
if __name__ == "__main__":
main()
```
85 lines
2.8 KiB
Python
85 lines
2.8 KiB
Python
"""Experimental implementation of lm-format-enforcer wrapped LLM."""
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from __future__ import annotations
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from typing import TYPE_CHECKING, Any, List, Optional
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from langchain.schema import LLMResult
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from langchain_community.llms.huggingface_pipeline import HuggingFacePipeline
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from langchain_core.callbacks.manager import CallbackManagerForLLMRun
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from langchain_experimental.pydantic_v1 import Field
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if TYPE_CHECKING:
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import lmformatenforcer
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def import_lmformatenforcer() -> lmformatenforcer:
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"""Lazily import of the lmformatenforcer package."""
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try:
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import lmformatenforcer
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except ImportError:
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raise ImportError(
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"Could not import lmformatenforcer python package. "
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"Please install it with `pip install lm-format-enforcer`."
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)
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return lmformatenforcer
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class LMFormatEnforcer(HuggingFacePipeline):
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"""LMFormatEnforcer wrapped LLM using HuggingFace Pipeline API.
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This pipeline is experimental and not yet stable.
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"""
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json_schema: Optional[dict] = Field(
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description="The JSON Schema to complete.", default=None
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)
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regex: Optional[str] = Field(
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description="The regular expression to complete.", default=None
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)
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def _generate(
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self,
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prompts: List[str],
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stop: Optional[List[str]] = None,
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run_manager: Optional[CallbackManagerForLLMRun] = None,
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**kwargs: Any,
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) -> LLMResult:
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lmformatenforcer = import_lmformatenforcer()
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import lmformatenforcer.integrations.transformers as hf_integration
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# We integrate lmformatenforcer by adding a prefix_allowed_tokens_fn.
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# It has to be done on each call, because the prefix function is stateful.
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if "prefix_allowed_tokens_fn" in self.pipeline._forward_params:
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raise ValueError(
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"prefix_allowed_tokens_fn param is forbidden with LMFormatEnforcer."
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)
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has_json_schema = self.json_schema is not None
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has_regex = self.regex is not None
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if has_json_schema == has_regex:
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raise ValueError(
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"You must specify exactly one of json_schema or a regex, but not both."
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)
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if has_json_schema:
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parser = lmformatenforcer.JsonSchemaParser(self.json_schema)
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else:
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parser = lmformatenforcer.RegexParser(self.regex)
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prefix_function = hf_integration.build_transformers_prefix_allowed_tokens_fn(
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self.pipeline.tokenizer, parser
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)
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self.pipeline._forward_params["prefix_allowed_tokens_fn"] = prefix_function
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result = super()._generate(
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prompts,
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stop=stop,
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run_manager=run_manager,
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**kwargs,
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)
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del self.pipeline._forward_params["prefix_allowed_tokens_fn"]
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return result
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