Resetting utils subtree.
This commit is contained in:
@@ -1,238 +0,0 @@
|
||||
"""
|
||||
|
||||
AUTHOR:
|
||||
|
||||
Khushal P Soonderji
|
||||
|
||||
DATE:
|
||||
|
||||
Thursday, 28th Nov., 2024
|
||||
|
||||
OBJECTIVE:
|
||||
|
||||
The "Index Master" contains information about just the indices, and not the component symbols of those indices.
|
||||
This script provides a way to get the data that is available on the screen on the following URL:
|
||||
https://www.nseindia.com/market-data/live-market-indices
|
||||
|
||||
NOTE: This method involves web scraping. It is good for proof-of-concept development, but it is recommended that
|
||||
more professional data-sources be used when the product starts becoming mature.
|
||||
|
||||
REFERENCES:
|
||||
|
||||
N/A
|
||||
|
||||
DOWNLOADS:
|
||||
|
||||
N/A
|
||||
|
||||
"""
|
||||
|
||||
|
||||
# *****************************************************************************************************************
|
||||
# ***** ****
|
||||
# *** IMPORT ***
|
||||
# ***** ****
|
||||
# *****************************************************************************************************************
|
||||
|
||||
|
||||
# To make sibling directories accessible for imports:
|
||||
import sys
|
||||
sys.path.append(".")
|
||||
sys.path.append("..")
|
||||
|
||||
# System-level activities:
|
||||
import io
|
||||
|
||||
# My utils:
|
||||
from utils_v2.string import json
|
||||
from utils_v2.date_time import date_time
|
||||
|
||||
# NSE-related utils:
|
||||
from utils_v2.nse.base import AsyncNSEBase
|
||||
from utils_v2.nse.models.data.api_call import NSEApiResponse
|
||||
|
||||
# To make REST-ful API calls:
|
||||
import httpx
|
||||
|
||||
# To work with date and time:
|
||||
import datetime
|
||||
|
||||
# To work with datatypes:
|
||||
from typing import Any, List
|
||||
|
||||
# For asynchronous activities:
|
||||
import asyncio
|
||||
|
||||
|
||||
# *****************************************************************************************************************
|
||||
# ***** ****
|
||||
# *** MACROS / ONE-TIME INIT ***
|
||||
# ***** ****
|
||||
# *****************************************************************************************************************
|
||||
|
||||
|
||||
# --- Nothing Yet
|
||||
|
||||
|
||||
# *****************************************************************************************************************
|
||||
# ***** ****
|
||||
# *** VARIABLES ***
|
||||
# ***** ****
|
||||
# *****************************************************************************************************************
|
||||
|
||||
|
||||
# --- Nothing Yet
|
||||
|
||||
|
||||
# *****************************************************************************************************************
|
||||
# ***** ****
|
||||
# *** FUNCTIONS ***
|
||||
# ***** ****
|
||||
# *****************************************************************************************************************
|
||||
|
||||
|
||||
class NSEIndexMaster(AsyncNSEBase):
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
http_client: httpx.AsyncClient,
|
||||
debug = True,
|
||||
debug_prefix = "NSE (IdxMstr) | ",
|
||||
debug_only_errors = True
|
||||
):
|
||||
|
||||
# Pass on the initialization to the parent:
|
||||
super().__init__(
|
||||
base_url = r"https://www.nseindia.com/market-data/live-market-indices",
|
||||
data_url = r"https://www.nseindia.com/api/allIndices",
|
||||
http_client = http_client,
|
||||
debug = debug,
|
||||
debug_prefix = debug_prefix,
|
||||
debug_only_errors = debug_only_errors
|
||||
)
|
||||
|
||||
async def get_data(
|
||||
self,
|
||||
return_raw: bool = False,
|
||||
) -> NSEApiResponse:
|
||||
|
||||
"""
|
||||
To get the data of the corporate event calendar.
|
||||
:param return_raw: Whether you want the raw JSON from NSE or you want it formatted.
|
||||
:return: The raw or formatted event calendar data in the 'data' field of the response model.
|
||||
"""
|
||||
|
||||
# Make the API call:
|
||||
api_response = await self.get()
|
||||
|
||||
# If the API call was successful:
|
||||
if api_response.httpCode in [200]:
|
||||
api_response.success = True
|
||||
if return_raw: api_response.data = await api_response.get_json()
|
||||
else:
|
||||
try: api_response.data = self.format_data(
|
||||
raw_json = await api_response.get_json(),
|
||||
timestamp = date_time.get_current_utc_date_time(as_string = True),
|
||||
raise_exception = True
|
||||
)
|
||||
except Exception as exception:
|
||||
api_response.exception = exception
|
||||
api_response.success = False
|
||||
|
||||
# Done here:
|
||||
return api_response
|
||||
|
||||
@staticmethod
|
||||
def format_data(
|
||||
raw_json: dict,
|
||||
timestamp: datetime.datetime = None,
|
||||
raise_exception: bool = False
|
||||
) -> List[dict] | None:
|
||||
|
||||
"""
|
||||
We format the data here to be able to retrieve it properly later.
|
||||
:param raw_json: The raw data as scraped from NSE.
|
||||
:param timestamp: The timestamp at which the data was scraped. This shall be useful for data retrieval from the
|
||||
database, later.
|
||||
:param raise_exception: If set to True, any exception will be propagated. If set to False, any exception will be
|
||||
suppressed internally.
|
||||
:return: The formatted data if successful, else None.
|
||||
"""
|
||||
|
||||
# Can't do anything if the chain itself is null:
|
||||
if raw_json is None: return raw_json
|
||||
|
||||
# Start by assuming failure:
|
||||
formatted_data = None
|
||||
|
||||
# Ensure that we've got a proper timestamp:
|
||||
if timestamp is None: timestamp = date_time.get_current_utc_date_time(as_string=False)
|
||||
|
||||
try:
|
||||
|
||||
# Format the data:
|
||||
formatted_data = [
|
||||
{
|
||||
"ts": timestamp,
|
||||
"indexType": idx["key"],
|
||||
"indexName": idx["index"],
|
||||
"indexSymbol": idx["indexSymbol"],
|
||||
"open": idx["open"],
|
||||
"high": idx["high"],
|
||||
"low": idx["low"],
|
||||
"close": idx["last"],
|
||||
"prevClose": idx["previousClose"],
|
||||
"pctChange": idx["percentChange"],
|
||||
"yearHigh": idx["yearHigh"],
|
||||
"yearLow": idx["yearLow"],
|
||||
"advances": idx.get("advances"),
|
||||
"declines": idx.get("declines"),
|
||||
"unchanged": idx.get("unchanged"),
|
||||
"pctChange30d": idx["perChange30d"],
|
||||
"pctChange365d": idx["perChange365d"]
|
||||
} for idx in raw_json["data"]
|
||||
]
|
||||
|
||||
# If something goes wrong:
|
||||
except Exception as exception:
|
||||
formatted_data = None
|
||||
if raise_exception: raise
|
||||
|
||||
# Done here:
|
||||
return formatted_data
|
||||
|
||||
|
||||
# *****************************************************************************************************************
|
||||
# ***** ****
|
||||
# *** MAIN PROGRAM ***
|
||||
# ***** ****
|
||||
# *****************************************************************************************************************
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
|
||||
async def main():
|
||||
|
||||
# Create an HTTP client:
|
||||
test_client = httpx.AsyncClient(
|
||||
limits = httpx.Limits(
|
||||
max_connections = 100, # ............ Maximum number of connections allowed in the pool.
|
||||
max_keepalive_connections = 50, # ... Maximum number of connections that can be kept alive.
|
||||
),
|
||||
timeout = httpx.Timeout(
|
||||
connect = 2.5, # ... Shorter connection timeout.
|
||||
read = 2.5, # ...... Like what EasyEcom gives.
|
||||
write = 10.0, # .... Time to wait for sending data.
|
||||
pool = 120.0 # ..... Time to wait for a free connection from the pool.
|
||||
)
|
||||
)
|
||||
|
||||
# Create an instance of the scraper, and refresh its cookies:
|
||||
my_nse = NSEIndexMaster(http_client = test_client)
|
||||
|
||||
# Get and show the data:
|
||||
api_response = await my_nse.get_data(return_raw = False)
|
||||
print("SUMMARY:", api_response.to_markdown(), "\n---\n\n")
|
||||
if api_response.success: print("INDEX MASTER:", json.to_string(api_response.data, default = str))
|
||||
|
||||
asyncio.run(main())
|
||||
Reference in New Issue
Block a user