engine_version

API documentation for tradeexecutor.strategy.engine_version Python module in Trading Strategy.

Module description

Execution engine versioning.

Different strategy modules may have functions with different signatures. Versioning strategy modules allows us to add and remove arguments without breaking backwards compatibility.

To compare versions:

from packaging import version

engine_version = run_description.trading_strategy_engine_version
if engine_version:
    if version.parse(engine_version) >= version.parse("0.5"):
        parameters = run_description.runner.parameters
        assert "required_history_period" in parameters, f"Strategy lacks Parameters.required_history_period. We have {parameters}"