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"""Util that calls Google Finance Search."""
from typing import Any, Dict, Optional, cast
from langchain_core.pydantic_v1 import BaseModel, Extra, SecretStr, root_validator
from langchain_core.utils import convert_to_secret_str, get_from_dict_or_env
class GoogleFinanceAPIWrapper(BaseModel):
"""Wrapper for SerpApi's Google Finance API
You can create SerpApi.com key by signing up at: https://serpapi.com/users/sign_up.
The wrapper uses the SerpApi.com python package:
https://serpapi.com/integrations/python
To use, you should have the environment variable ``SERPAPI_API_KEY``
set with your API key, or pass `serp_api_key` as a named parameter
to the constructor.
Example:
.. code-block:: python
from langchain_community.utilities import GoogleFinanceAPIWrapper
google_Finance = GoogleFinanceAPIWrapper()
google_Finance.run('langchain')
"""
serp_search_engine: Any
serp_api_key: Optional[SecretStr] = None
class Config:
"""Configuration for this pydantic object."""
extra = Extra.forbid
@root_validator()
def validate_environment(cls, values: Dict) -> Dict:
"""Validate that api key and python package exists in environment."""
values["serp_api_key"] = convert_to_secret_str(
get_from_dict_or_env(values, "serp_api_key", "SERPAPI_API_KEY")
)
try:
from serpapi import SerpApiClient
except ImportError:
raise ImportError(
"google-search-results is not installed. "
"Please install it with `pip install google-search-results"
">=2.4.2`"
)
serp_search_engine = SerpApiClient
values["serp_search_engine"] = serp_search_engine
return values
def run(self, query: str) -> str:
"""Run query through Google Finance with Serpapi"""
serpapi_api_key = cast(SecretStr, self.serp_api_key)
params = {
"engine": "google_finance",
"api_key": serpapi_api_key.get_secret_value(),
"q": query,
}
total_results = {}
client = self.serp_search_engine(params)
total_results = client.get_dict()
if not total_results:
return "Nothing was found from the query: " + query
markets = total_results.get("markets", {})
res = "\nQuery: " + query + "\n"
if "futures_chain" in total_results:
futures_chain = total_results.get("futures_chain", [])[0]
stock = futures_chain["stock"]
price = futures_chain["price"]
temp = futures_chain["price_movement"]
percentage = temp["percentage"]
movement = temp["movement"]
res += (
f"stock: {stock}\n"
+ f"price: {price}\n"
+ f"percentage: {percentage}\n"
+ f"movement: {movement}\n"
)
else:
res += "No summary information\n"
for key in markets:
if (key == "us") or (key == "asia") or (key == "europe"):
res += key
res += ": price = "
res += str(markets[key][0]["price"])
res += ", movement = "
res += markets[key][0]["price_movement"]["movement"]
res += "\n"
return res
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