from abc import abstractmethod import sys, abc if sys.version_info >= (3, 4): ABC = abc.ABC else: ABC = abc.ABCMeta('ABC', (), {}) import numpy as np from enum import Enum class Env(ABC): class Terminate(Enum): Null = 0 Fail = 1 Succ = 2 def __init__(self, args, enable_draw): self.enable_draw = enable_draw return