mirror of
https://github.com/hwchase17/langchain.git
synced 2025-09-28 23:07:11 +00:00
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."""
|
|
|
|
from __future__ import annotations
|
|
|
|
from datetime import datetime, timedelta
|
|
from typing import Any, Dict, Optional
|
|
|
|
from langchain_core.utils import get_from_dict_or_env
|
|
from pydantic import BaseModel, ConfigDict, model_validator
|
|
|
|
|
|
class AskNewsAPIWrapper(BaseModel):
|
|
"""Wrapper for AskNews API."""
|
|
|
|
asknews_sync: Any = None #: :meta private:
|
|
asknews_async: Any = None #: :meta private:
|
|
asknews_client_id: Optional[str] = None
|
|
"""Client ID for the AskNews API."""
|
|
asknews_client_secret: Optional[str] = None
|
|
"""Client Secret for the AskNews API."""
|
|
|
|
model_config = ConfigDict(
|
|
extra="forbid",
|
|
)
|
|
|
|
@model_validator(mode="before")
|
|
@classmethod
|
|
def validate_environment(cls, values: Dict) -> Any:
|
|
"""Validate that api credentials and python package exists in environment."""
|
|
|
|
asknews_client_id = get_from_dict_or_env(
|
|
values, "asknews_client_id", "ASKNEWS_CLIENT_ID"
|
|
)
|
|
asknews_client_secret = get_from_dict_or_env(
|
|
values, "asknews_client_secret", "ASKNEWS_CLIENT_SECRET"
|
|
)
|
|
|
|
try:
|
|
import asknews_sdk
|
|
|
|
except ImportError:
|
|
raise ImportError(
|
|
"AskNews python package not found. "
|
|
"Please install it with `pip install asknews`."
|
|
)
|
|
|
|
an_sync = asknews_sdk.AskNewsSDK(
|
|
client_id=asknews_client_id,
|
|
client_secret=asknews_client_secret,
|
|
scopes=["news"],
|
|
)
|
|
an_async = asknews_sdk.AsyncAskNewsSDK(
|
|
client_id=asknews_client_id,
|
|
client_secret=asknews_client_secret,
|
|
scopes=["news"],
|
|
)
|
|
|
|
values["asknews_sync"] = an_sync
|
|
values["asknews_async"] = an_async
|
|
values["asknews_client_id"] = asknews_client_id
|
|
values["asknews_client_secret"] = asknews_client_secret
|
|
|
|
return values
|
|
|
|
def search_news(
|
|
self, query: str, max_results: int = 10, hours_back: int = 0
|
|
) -> str:
|
|
"""Search news in AskNews API synchronously."""
|
|
if hours_back > 48:
|
|
method = "kw"
|
|
historical = True
|
|
start = int((datetime.now() - timedelta(hours=hours_back)).timestamp())
|
|
stop = int(datetime.now().timestamp())
|
|
else:
|
|
historical = False
|
|
method = "nl"
|
|
start = None
|
|
stop = None
|
|
|
|
response = self.asknews_sync.news.search_news(
|
|
query=query,
|
|
n_articles=max_results,
|
|
method=method,
|
|
historical=historical,
|
|
start_timestamp=start,
|
|
end_timestamp=stop,
|
|
return_type="string",
|
|
)
|
|
return response.as_string
|
|
|
|
async def asearch_news(
|
|
self, query: str, max_results: int = 10, hours_back: int = 0
|
|
) -> str:
|
|
"""Search news in AskNews API asynchronously."""
|
|
if hours_back > 48:
|
|
method = "kw"
|
|
historical = True
|
|
start = int((datetime.now() - timedelta(hours=hours_back)).timestamp())
|
|
stop = int(datetime.now().timestamp())
|
|
else:
|
|
historical = False
|
|
method = "nl"
|
|
start = None
|
|
stop = None
|
|
|
|
response = await self.asknews_async.news.search_news(
|
|
query=query,
|
|
n_articles=max_results,
|
|
method=method,
|
|
historical=historical,
|
|
start_timestamp=start,
|
|
end_timestamp=stop,
|
|
return_type="string",
|
|
)
|
|
return response.as_string
|