"""Create logic_validator
Generated by Phi-Octopus Eden
2025-11-07 09:55:08.621181
"""

```python
def create_logic_validator(logic_str: str) -> callable:
    """
    Creates a logic validator function from a string representation of a logical expression.

    Args:
        logic_str (str): A string representing a logical expression using 'and', 'or', and 'not'.
                         Variables in the expression should be valid Python identifiers.
    
    Returns:
        callable: A function that takes keyword arguments matching variables used in `logic_str`
                  and returns True if the expression evaluates to True, False otherwise.

    Example Usage:
    >>> validator = create_logic_validator("x and y or not z")
    >>> validator(x=True, y=True, z=False)
    True
    >>> validator(x=False, y=True, z=True)
    False

    Note: This function uses `eval` which can be risky with untrusted input. Ensure the logic_str is safe.
    """
    import ast
    
    class VariableChecker(ast.NodeVisitor):
        def __init__(self, variables):
            self.variables = variables
            self.valid_expression = True
        
        def visit_Name(self, node: ast.Name) -> None:
            if node.id not in self.variables:
                raise ValueError(f"Undefined variable {node.id} used in expression.")
            self.generic_visit(node)
        
    def logic_validator(**kwargs):
        allowed_vars = set(kwargs.keys())
        parser = VariableChecker(allowed_vars)
        try:
            parser.visit(ast.parse(logic_str, mode='eval'))
        except ValueError as e:
            raise ValueError(f"Invalid expression: {e}")
        return eval(logic_str, {}, kwargs)
    
    return logic_validator

# Example usage
validator = create_logic_validator("x and y or not z")
print(validator(x=True, y=True, z=False))  # Output: True
print(validator(x=False, y=True, z=True))  # Output: False
```