Untitled

class Node:

    def __init__(self, x, y):
        self.x = x 
        self.y = y
        self.f = 0
        self.g = 0
        self.h = 0
        self.neighbors = []
        self.previous  = None
        self. obstacle = False

    def add_neighbors(self, grid, columns, rows):
        neighbor_x = self.x
        neighbor_y = self.y
    
        if neighbor_x < columns - 1:
            self.neighbors.append(grid[neighbor_x+1][neighbor_y])
        if neighbor_x > 0:
            self.neighbors.append(grid[neighbor_x-1][neighbor_y])
        if neighbor_y < rows -1:
            self.neighbors.append(grid[neighbor_x][neighbor_y +1])
        if neighbor_y > 0: 
            self.neighbors.append(grid[neighbor_x][neighbor_y-1])