backtrader.bokeh.live.datahandler module

Live data handler.

Handles real-time data updates and pushes.

class backtrader.bokeh.live.datahandler.UpdateType

Bases: Enum

Data update type.

ADD = 1

UPDATE = 2

class backtrader.bokeh.live.datahandler.LiveDataHandler

Bases: object

Live data handler.

Responsible for receiving, storing and pushing real-time data.

_doc

Bokeh document

_app

BacktraderBokeh application

_figid

Figure page ID

_lookback

Historical data retention

_fill_gaps

Whether to fill data gaps

__init__(doc, app, figid, lookback, fill_gaps=True, timeout=1)

Initialize data handler.

Parameters:

• doc – Bokeh document

• app – BacktraderBokeh application

• figid – Figure page ID

• lookback – Historical data retention

• fill_gaps – Whether to fill data gaps

• timeout – Thread timeout

get_last_idx()

Get last data index.

Returns:

Last index, returns -1 if no data

Return type:

int

set(df)

Set new DataFrame and push.

Parameters:

df – New DataFrame

update()

Notify that new data is available.

stop()

Stop data handler.