Struct pyconnect6::pybind::PyEval

pub struct PyEval { /* fields omitted */ }

AlphaZero value, policy approximator with python callable object

it implement trait Evaluator for evaluating given boards with PyObject

Examples

let pyeval = py_policy!();
let board = [[Player::None; BOARD_SIZE]; BOARD_SIZE];
assert!(pyeval.eval(Player::Black, &vec![board]).is_some());

Methods

impl PyEval

pub fn new(pyobj: PyObject) -> PyEval

Create new PyEval with given PyObject.

Trait Implementations

impl Evaluator for PyEval

fn eval(
    &self,
    turn: Player,
    board: &Vec<Board>
) -> Option<(Vec<f32>, Vec<[[f32; 15]; 15]>)>

Get value and prob from PyObject

Panics

• If self.pyobj is not callable object, or method __call__ is not a type of __call__(self, turn, board): (value, prob)
• if return value of self.pyobj.call() is not a tuple type object.

Errors

• if value is not a sequence type object consists of floats.
• if policy is not a 2D sequence type object consists of floats.
• if policy is not shaped [boards.len(), BOARD_SIZE ** 2]