contango.strategy.rule_based.conditions.predicate

contango.strategy.rule_based.conditions.predicate

Predicate

Predicate(fn: Callable[[TradingContext], bool])

Bases: Condition[TradingContext]

A lambda expression that evaluates to a boolean.

Initializes Predicate.

Parameters:

Name	Type	Description	Default
fn	Callable[[TradingContext], bool]	The callable that returns a boolean.	required

Source code in src\contango\strategy\rule_based\conditions\predicate.py

def __init__(self, fn: Callable[[TradingContext], bool]) -> None:
    """
    Initializes `Predicate`.

    Args:   
        fn: The callable that returns a boolean.
    """
    self._fn = fn

evaluate

evaluate(context: TradingContext) -> bool

Evaluates the state of the predicate.

Parameters:

Name	Type	Description	Default
context	TradingContext	The current context to feed into the lambda.	required

Returns:

Name	Type	Description
bool	bool	The boolean value of the lambda.

Source code in src\contango\strategy\rule_based\conditions\predicate.py

def evaluate(self, context: TradingContext) -> bool:
    """
    Evaluates the state of the predicate.

    Args:
        context: The current context to feed into the lambda.

    Returns:
        bool: The boolean value of the lambda.
    """
    return self._fn(context)