4. Finding and Using Built-in Strategies

qteasy provides many built-in trading strategies. Look them up by ID, read their docs, and use them directly in an Operator.

4.1. Find and Retrieve Built-in Strategies

qt.built_in_list(): Return all built-in strategy IDs (or filter with a fuzzy string).
qt.built_ins(stg_id): Return a mapping of strategy classes or instances by ID; omit stg_id for all.
qt.built_in_doc(stg_id): Return the strategy docstring (description, parameters, etc.).
qt.get_strategy_by_id(stg_id): Get a usable strategy instance by ID for add_strategy.

import qteasy as qt

# 列出所有内置策略 ID
ids = qt.built_in_list()
print(ids[:10])

# 获取单个策略文档
print(qt.built_in_doc('dma'))

# 获取策略实例并加入 Operator
stg = qt.get_strategy_by_id('macd')
op = qt.Operator(strategies=stg, signal_type='PT', run_freq='d')
# 或直接传 ID
op = qt.Operator(strategies='macd', signal_type='PT', run_freq='d')

4.2. Use Built-in Strategies in an Operator

Pass a strategy ID string (e.g., 'dma', 'macd') or a strategy class/instance.
Use set_parameter('stg_id', pars=...) for tunable parameters; optionally set run_freq and run_timing for grouping.

4.3. Full Built-in Strategy List (with Brief Descriptions)

Below is the list of built-in strategy IDs in qteasy. For details, parameter names and meanings, and signal types, call qt.built_in_doc('id').

Strategy ID	Category / Description
crossline	Moving-average crossover
macd, macdext	MACD-related
dma, trix	Dual/multiple moving averages
cdl, bband, s-bband, sarext	Candlestick, Bollinger, SAR, etc.
ssma, sdema, sema, sht, skama, smama, st3, stema, strima, swma	Smoothing (SCR prefix)
dsma, ddema, dema, dkama, dmama, dt3, dtema, dtrima, dwma	Smoothing (DCR prefix)
slsma, sldema, slema, slht, slkama, slmama, slt3, sltema, sltrima, slwma	Smoothing (SLP prefix)
adx, apo, aroon, aroonosc, cci, cmo, mfi, di, dm, mom, ppo, rsi, stoch, stochf, stochrsi, ultosc, willr	Technical indicators
ad, adosc, obv	Volume-based
signal_none, sellrate, buyrate	Signal control / ratio
long, short, zero	Fixed timing positions
all, select_none, random	Stock selection (all / none / random)
finance, ndaylast, ndayavg, ndayrate, ndaychg, ndayvol	Selection factor

The authoritative ID list is qt.built_in_list(); parameters and usage are in qt.built_in_doc('id').