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https://github.com/Farama-Foundation/Gymnasium.git
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07645bd11e
* spaces equality fixes and tests * squash-merged master * added better equality tests and more checks against bad space creation
38 lines
936 B
Python
38 lines
936 B
Python
import numpy as np
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import gym
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from .space import Space
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class Discrete(Space):
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"""
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{0,1,...,n-1}
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Example usage:
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self.observation_space = spaces.Discrete(2)
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"""
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def __init__(self, n):
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self.n = n
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super(Discrete, self).__init__((), np.int64)
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self.np_random = np.random.RandomState()
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def seed(self, seed):
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self.np_random.seed(seed)
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def sample(self):
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return self.np_random.randint(self.n)
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def contains(self, x):
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if isinstance(x, int):
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as_int = x
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elif isinstance(x, (np.generic, np.ndarray)) and (x.dtype.kind in np.typecodes['AllInteger'] and x.shape == ()):
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as_int = int(x)
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else:
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return False
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return as_int >= 0 and as_int < self.n
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def __repr__(self):
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return "Discrete(%d)" % self.n
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def __eq__(self, other):
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return isinstance(other, Discrete) and self.n == other.n
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