deepseek.py•3.02 kB
from __future__ import annotations as _annotations
import os
from typing import overload
import httpx
from openai import AsyncOpenAI
from pydantic_ai import ModelProfile
from pydantic_ai.exceptions import UserError
from pydantic_ai.models import cached_async_http_client
from pydantic_ai.profiles.deepseek import deepseek_model_profile
from pydantic_ai.profiles.openai import OpenAIJsonSchemaTransformer, OpenAIModelProfile
from pydantic_ai.providers import Provider
try:
from openai import AsyncOpenAI
except ImportError as _import_error: # pragma: no cover
raise ImportError(
'Please install the `openai` package to use the DeepSeek provider, '
'you can use the `openai` optional group — `pip install "pydantic-ai-slim[openai]"`'
) from _import_error
class DeepSeekProvider(Provider[AsyncOpenAI]):
"""Provider for DeepSeek API."""
@property
def name(self) -> str:
return 'deepseek'
@property
def base_url(self) -> str:
return 'https://api.deepseek.com'
@property
def client(self) -> AsyncOpenAI:
return self._client
def model_profile(self, model_name: str) -> ModelProfile | None:
profile = deepseek_model_profile(model_name)
# As DeepSeekProvider is always used with OpenAIChatModel, which used to unconditionally use OpenAIJsonSchemaTransformer,
# we need to maintain that behavior unless json_schema_transformer is set explicitly.
# This was not the case when using a DeepSeek model with another model class (e.g. BedrockConverseModel or GroqModel),
# so we won't do this in `deepseek_model_profile` unless we learn it's always needed.
return OpenAIModelProfile(json_schema_transformer=OpenAIJsonSchemaTransformer).update(profile)
@overload
def __init__(self) -> None: ...
@overload
def __init__(self, *, api_key: str) -> None: ...
@overload
def __init__(self, *, api_key: str, http_client: httpx.AsyncClient) -> None: ...
@overload
def __init__(self, *, openai_client: AsyncOpenAI | None = None) -> None: ...
def __init__(
self,
*,
api_key: str | None = None,
openai_client: AsyncOpenAI | None = None,
http_client: httpx.AsyncClient | None = None,
) -> None:
api_key = api_key or os.getenv('DEEPSEEK_API_KEY')
if not api_key and openai_client is None:
raise UserError(
'Set the `DEEPSEEK_API_KEY` environment variable or pass it via `DeepSeekProvider(api_key=...)`'
'to use the DeepSeek provider.'
)
if openai_client is not None:
self._client = openai_client
elif http_client is not None:
self._client = AsyncOpenAI(base_url=self.base_url, api_key=api_key, http_client=http_client)
else:
http_client = cached_async_http_client(provider='deepseek')
self._client = AsyncOpenAI(base_url=self.base_url, api_key=api_key, http_client=http_client)