#!/usr/bin/env python3 from typing import Dict, List, Optional, Tuple import yfinance as yf # type: ignore import file_writer import renderer class stock_quote_renderer(renderer.debuggable_abstaining_renderer): """Render the stock prices page.""" def __init__( self, name_to_timeout_dict: Dict[str, int], symbols: List[str], display_subs: Dict[str, str] = None, ) -> None: super(stock_quote_renderer, self).__init__(name_to_timeout_dict, False) self.symbols = symbols self.display_subs = display_subs def debug_prefix(self) -> str: return "stock" @staticmethod def get_ticker_name(ticker: yf.ticker.Ticker) -> str: """Get friendly name of a ticker.""" info = ticker.get_info() return info["shortName"] @staticmethod def get_price(ticker: yf.ticker.Ticker) -> Optional[float]: """Get most recent price of a ticker.""" keys = [ "bid", "ask", "regularMarketPrice", "lastMarket", "open", "previousClose", ] info = ticker.get_info() for key in keys: if key in info and info[key] is not None and info[key] != 0.0: print(f"Price: picked {key}, ${info[key]}.") return float(info[key]) return None @staticmethod def get_change_and_delta( ticker: yf.ticker.Ticker, price: float ) -> Tuple[float, float]: """Given the current price, look up opening price and compute delta.""" keys = [ "open", "previousClose", ] info = ticker.get_info() for key in keys: if key in info and info[key] is not None: print(f"Change: picked {key}, ${info[key]}.") old_price = float(info[key]) delta = price - old_price return (delta / old_price * 100.0, delta) return (0.0, 0.0) def periodic_render(self, key: str) -> bool: """Write an up-to-date stock page.""" with file_writer.file_writer("stock_3_86400.html") as f: f.write("
{symbol}
${price:.2f}
({percent_change:.1f}%) ${delta:.2f} | """
)
f.write("