mirror of
https://github.com/hwchase17/langchain.git
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844955d6e1
Assigning missed defaults in various classes. Most clients were being
assigned during the `model_validator(mode="before")` step, so this
change should amount to a no-op in those cases.
---
This PR was autogenerated using gritql
```shell
grit apply 'class_definition(name=$C, $body, superclasses=$S) where {
$C <: ! "Config", // Does not work in this scope, but works after class_definition
$body <: block($statements),
$statements <: some bubble assignment(left=$x, right=$y, type=$t) as $A where {
or {
$y <: `Field($z)`,
$x <: "model_config"
}
},
// And has either Any or Optional fields without a default
$statements <: some bubble assignment(left=$x, right=$y, type=$t) as $A where {
$t <: or {
r"Optional.*",
r"Any",
r"Union[None, .*]",
r"Union[.*, None, .*]",
r"Union[.*, None]",
},
$y <: ., // Match empty node
$t => `$t = None`,
},
}
' --language python .
```
116 lines
3.5 KiB
Python
116 lines
3.5 KiB
Python
"""Util that calls AskNews api."""
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from __future__ import annotations
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from datetime import datetime, timedelta
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from typing import Any, Dict, Optional
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from langchain_core.utils import get_from_dict_or_env
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from pydantic import BaseModel, ConfigDict, model_validator
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class AskNewsAPIWrapper(BaseModel):
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"""Wrapper for AskNews API."""
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asknews_sync: Any = None #: :meta private:
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asknews_async: Any = None #: :meta private:
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asknews_client_id: Optional[str] = None
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"""Client ID for the AskNews API."""
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asknews_client_secret: Optional[str] = None
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"""Client Secret for the AskNews API."""
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model_config = ConfigDict(
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extra="forbid",
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)
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@model_validator(mode="before")
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@classmethod
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def validate_environment(cls, values: Dict) -> Any:
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"""Validate that api credentials and python package exists in environment."""
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asknews_client_id = get_from_dict_or_env(
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values, "asknews_client_id", "ASKNEWS_CLIENT_ID"
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)
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asknews_client_secret = get_from_dict_or_env(
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values, "asknews_client_secret", "ASKNEWS_CLIENT_SECRET"
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)
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try:
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import asknews_sdk
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except ImportError:
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raise ImportError(
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"AskNews python package not found. "
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"Please install it with `pip install asknews`."
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)
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an_sync = asknews_sdk.AskNewsSDK(
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client_id=asknews_client_id,
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client_secret=asknews_client_secret,
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scopes=["news"],
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)
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an_async = asknews_sdk.AsyncAskNewsSDK(
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client_id=asknews_client_id,
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client_secret=asknews_client_secret,
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scopes=["news"],
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)
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values["asknews_sync"] = an_sync
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values["asknews_async"] = an_async
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values["asknews_client_id"] = asknews_client_id
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values["asknews_client_secret"] = asknews_client_secret
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return values
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def search_news(
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self, query: str, max_results: int = 10, hours_back: int = 0
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) -> str:
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"""Search news in AskNews API synchronously."""
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if hours_back > 48:
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method = "kw"
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historical = True
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start = int((datetime.now() - timedelta(hours=hours_back)).timestamp())
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stop = int(datetime.now().timestamp())
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else:
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historical = False
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method = "nl"
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start = None
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stop = None
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response = self.asknews_sync.news.search_news(
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query=query,
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n_articles=max_results,
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method=method,
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historical=historical,
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start_timestamp=start,
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end_timestamp=stop,
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return_type="string",
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)
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return response.as_string
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async def asearch_news(
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self, query: str, max_results: int = 10, hours_back: int = 0
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) -> str:
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"""Search news in AskNews API asynchronously."""
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if hours_back > 48:
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method = "kw"
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historical = True
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start = int((datetime.now() - timedelta(hours=hours_back)).timestamp())
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stop = int(datetime.now().timestamp())
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else:
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historical = False
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method = "nl"
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start = None
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stop = None
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response = await self.asknews_async.news.search_news(
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query=query,
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n_articles=max_results,
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method=method,
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historical=historical,
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start_timestamp=start,
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end_timestamp=stop,
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return_type="string",
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)
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return response.as_string
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