Stick with minimax IA and Python

MinimaxSticks.py

# Credit : Trevor Payne https://www.youtube.com/watch?v=fInYh90YMJU&noredirect=1
from sys import maxsize


class Node(object):
    def __init__(self, i_depth, i_playerNum, i_sticksRemaining, i_value=0):
        self.i_depth = i_depth
        self.i_playerNum = i_playerNum
        self.i_sticksRemaining = i_sticksRemaining
        self.i_value = i_value
        self.children = []
        self.createChildren()

    def createChildren(self):
        if self.i_depth < 0:
            return
        for i in range(1, 3):
            v = self.i_sticksRemaining - i
            self.children.append(Node(self.i_depth - 1, -self.i_playerNum, v, self.realVal(v)))

    def realVal(self, value):
        if value == 0:
            return maxsize * self.i_playerNum
        elif value < 0:
            return maxsize * -self.i_playerNum
        return 0


def minimax(node, i_depth, i_playerNum):
    if (i_depth == 0) or (abs(node.i_value) == maxsize):
        return node.i_value

    i_bestValue = maxsize * -i_playerNum

    for child in node.children:
        i_val = minimax(child, i_depth - 1, -i_playerNum)
        if abs(maxsize * i_playerNum - i_val) < abs(maxsize * i_playerNum - i_bestValue):
            i_bestValue = i_val

    return i_bestValue


def winCheck(i_sticks, i_playerNum):
    if i_sticks <= 0:
        print("*" * 30)
        if i_playerNum > 0:
            if i_sticks == 0:
                print("\t You WIN!")
            else:
                print("\t Too many ! You loose..")
        else:
            if i_sticks == 0:
                print("\t Comp Wins... Try again.")
            else:
                print("\t COMP ERROR!")
        print("*" * 30)
        return 0
    return 1


if __name__ == '__main__':
    i_stickTotal = 11
    i_depth = 4
    i_curPlayer = 1
    print("INSTRUCTIONS : Pick up one or two sticks at time.")
    while i_stickTotal > 0:
        print("\n%d sticks remain. How many would you like to pick up ?" % i_stickTotal)
        i_choice = input("\n1 or 2:")
        i_stickTotal -= int(float(i_choice))
        if winCheck(i_stickTotal, i_curPlayer):
            i_curPlayer *= -1
            node = Node(i_depth, i_curPlayer, i_stickTotal)
            bestChoice = -100
            i_bestValue = -i_curPlayer * maxsize
            for i in range(len(node.children)):
                n_child = node.children[i]
                i_val = minimax(n_child, i_depth, -i_curPlayer)
                if abs(i_curPlayer * maxsize - i_val) <= abs(i_curPlayer * maxsize - i_bestValue):
                    i_bestValue = i_val
                    bestChoice = i
            bestChoice += 1
            print("Comp chooses: " + str(bestChoice) + "\tBased on value: " + str(i_bestValue))
            i_stickTotal -= bestChoice
            winCheck(i_stickTotal, i_curPlayer)
            i_curPlayer *= -1