Web Applications

Flask Web App

from algo_engine.apps.backtest import WebApp, start_app
from datetime import date

app = WebApp(
    start_date=date(2024, 1, 2),
    end_date=date(2024, 6, 30),
    name="My Backtest",
    address="0.0.0.0",
    port=8080,
)
app.register("000001.SH")   # creates CandleStick dashboard
app.serve(blocking=True)

# Or use the convenience function
start_app(start_date=date(2024, 1, 2), end_date=date(2024, 6, 30))

WebApp runs a Flask server with embedded Bokeh candlestick charts. Each registered ticker gets its own dashboard page at /<ticker>.

Bokeh Dashboards

from algo_engine.apps import DocServer, DocTheme
from algo_engine.apps.backtest import CandleStick, StickTheme
from datetime import date

stick = CandleStick(
    ticker="000001.SH",
    start_date=date(2024, 1, 2),
    end_date=date(2024, 6, 30),
    interval=60.0,                    # bar interval in seconds
    theme=StickTheme(style="cn_style"),   # red-up/green-down
)
# Push market data to update the chart
stick.update(tick)

# Export to CSV
stick.to_csv("000001.SH_bars.csv")

StickTheme supports:

• ws_style — green up, red down (Western)

• cn_style — red up, green down (China)

Strategy Tester

from algo_engine.apps import Tester, StrategyTester
from datetime import date

tester = StrategyTester(
    start_date=date(2024, 1, 2),
    end_date=date(2024, 6, 30),
    data_loader=my_loader,
    strategy=my_strategy,
)
tester.register_ticker("000001.SH")
# Automatically creates SimMatch, TradeMetrics, and optional WebApp
tester.run()

Tester is the abstract base; StrategyTester adds event-engine integration, strategy dispatch, and position management.

Optional Dependencies

pip install PyAlgoEngine[WebApps]

Installs: flask, waitress (production WSGI), bokeh.