3. Operator: Creation and Basic Configuration

Operator is qteasy’s strategy container and scheduler. It runs strategies at configured frequencies and times in backtest or live trading and outputs signals in a unified format.

3.1. Create an Operator

Create one with qt.Operator(), optionally passing a strategy list and signal_type, run_freq, run_timing, and other arguments:

import qteasy as qt

# 最小示例：仅指定信号类型与运行频率
op = qt.Operator(signal_type='PT', run_freq='d')

# 创建时即添加策略（策略 ID 或实例）
op = qt.Operator(strategies='dma', signal_type='PT', run_freq='d', run_timing='open')

3.2. Add Strategies

add_strategy(stg, run_freq=None, run_timing=None): Add a single strategy with optional run_freq/run_timing; joins an existing Group if they match, otherwise creates a new Group.
add_strategies(stg_list, run_freq=None, run_timing=None): Add multiple strategies and group them by run_freq/run_timing the same way.

op = qt.Operator(signal_type='PT', run_freq='d')
op.add_strategy('macd', run_freq='d', run_timing='open')
op.add_strategy(qt.get_strategy_by_id('dma'), run_freq='d', run_timing='open')

3.3. Common Attributes and Meanings

Attribute	Meaning
signal_type	Signal type: `PT` position target, `PS` proportional signal, `VS` value signal, etc.
run_freq	Run frequency, e.g., `'d'` daily or `'1min'`; aligns with `DataType` `freq`.
run_timing	Run timing, e.g., `'open'` at open or `'close'` at close.
groups	Group details (strategies with the same `run_freq`/`run_timing` form one group).

3.4. Set Strategy Parameters

Use set_parameter(stg_id, pars=None, run_freq=None, run_timing=None, ...) to set tunable parameters or group assignment for a strategy:

op.set_parameter('dma', pars={'short_period': 5, 'long_period': 20})

3.5. Pre-run Check

is_ready(): Check whether the Operator is configured with strategies and data requirements; useful before backtest or optimization.