# probVariables.py - Probabilistic Variables
# AIFCA Python3 code Version 0.9.1 Documentation at http://aipython.org

# Artificial Intelligence: Foundations of Computational Agents
# http://artint.info
# Copyright David L Poole and Alan K Mackworth 2017-2020.
# This work is licensed under a Creative Commons
# Attribution-NonCommercial-ShareAlike 4.0 International License.
# See: http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en

import random

class Variable(object):
    """A random variable.
    name (string) - name of the variable
    domain (list) - a list of the values for the variable.
    Variables are ordered according to their name.
    """

    def __init__(self, name, domain, position=None):
        """Variable
        name a string
        domain a list of printable values
        position of form (x,y) 
        """
        self.name = name   # string
        self.domain = domain # list of values
        self.position = position if position else (random.random(), random.random())
        self.size = len(domain) 

    def __str__(self):
        return self.name
    
    def __repr__(self):
        return self.name  # f"Variable({self.name})"