def operation():
op = keypress.getArrowKey()
directions = {65:'up', 66:'down', 67:'right', 68:'left', 81:'quit', 113:'quit'}
moveCells(direction=directions.get(op, 'wrong direction'))
def readMove(self):
"""
read and return a move to pass to a board
"""
k = keypress.getArrowKey()
return Game.__dirs.get(k)
