"""Create reasoning_engine
Generated by Phi-Octopus Eden
2025-11-06 23:49:23.644247
"""

```python
class ReasoningEngine:
    """
    A simple reasoning engine that can evaluate basic logical expressions.

    Args:
        knowledge_base (dict): A dictionary containing variables and their values.
    
    Methods:
        __init__(self, knowledge_base: dict) -> None: Initializes the reasoning engine with a knowledge base.
        evaluate_expression(self, expression: str) -> bool: Evaluates a logical expression based on the current knowledge base.
    """

    def __init__(self, knowledge_base: dict):
        self.knowledge_base = knowledge_base

    def evaluate_expression(self, expression: str) -> bool:
        """
        Evaluate a logical expression using variables from the knowledge base.

        Args:
            expression (str): A string representing a logical expression.
        
        Returns:
            bool: The result of evaluating the expression based on current knowledge.
        """
        try:
            # Replace variable names in expression with their values
            for var, value in self.knowledge_base.items():
                expression = expression.replace(var, str(value))
            
            # Evaluate and return the boolean result
            return eval(expression)
        
        except Exception as e:
            print(f"Error evaluating expression: {e}")
            return False

# Example usage
if __name__ == "__main__":
    knowledge_base = {"A": True, "B": False}
    
    reasoning_engine = ReasoningEngine(knowledge_base)
    result = reasoning_engine.evaluate_expression("(A and not B) or (not A and B)")
    print(f"Result: {result}")
```

This code defines a simple `ReasoningEngine` class that can evaluate basic logical expressions using variables from a provided knowledge base. The example usage demonstrates how to create an instance of the engine and use it to evaluate a logical expression.