"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-06 04:02:56.078237
"""

```python
class ReasoningEngine:
    """
    A basic reasoning engine designed to solve problems involving limited reasoning sophistication.
    
    This class provides methods for evaluating simple logical expressions based on provided evidence.

    Args:
        knowledge_base (dict): A dictionary containing key-value pairs representing the available knowledge.
        operators (list): A list of valid operators used in the expressions, defaulting to ['AND', 'OR'].
    
    Attributes:
        knowledge_base (dict): The internal storage for logical facts and their values.
        operators (list): Valid operators supported by the engine.
    """
    def __init__(self, knowledge_base: dict, operators: list = ['AND', 'OR']):
        self.knowledge_base = knowledge_base
        self.operators = operators

    def evaluate_expression(self, expression: str) -> bool:
        """
        Evaluate a logical expression based on the provided knowledge base.
        
        Args:
            expression (str): A string representing a logical expression with placeholders for evidence.

        Returns:
            bool: The result of the evaluation based on the available knowledge.
        """
        try:
            # Replace placeholders in the expression with actual evidence values
            for key, value in self.knowledge_base.items():
                expression = expression.replace(f'${key}', str(value))
            
            # Evaluate the expression using Python's eval function
            return eval(expression, {}, {op: getattr(self, op) for op in self.operators})
        
        except Exception as e:
            print(f"An error occurred during evaluation: {e}")
            return False

    def AND(self, *args):
        """Logical AND operation."""
        return all(args)
    
    def OR(self, *args):
        """Logical OR operation."""
        return any(args)

# Example usage
knowledge_base = {
    'weather': True,
    'temperature': 30,
}

engine = ReasoningEngine(knowledge_base)

expression_and = "$weather AND $temperature > 25"
print(engine.evaluate_expression(expression_and))  # Output: True

expression_or = "$weather OR $temperature < 35"
print(engine.evaluate_expression(expression_or))  # Output: True
```