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32 lines
1.0 KiB
Python
32 lines
1.0 KiB
Python
from gym import Space
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class Tuple(Space):
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"""
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A tuple (i.e., product) of simpler spaces
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"""
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def __init__(self, spaces):
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self.spaces = spaces
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def __len__(self):
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return len(self.spaces)
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def sample(self):
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return tuple([space.sample() for space in self.spaces])
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def contains(self, x):
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if isinstance(x, list):
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x = tuple(x) # Promote list to tuple for contains check
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return isinstance(x, tuple) and len(x) == len(self.spaces) and all(
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space.contains(part) for (space,part) in zip(self.spaces,x))
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def __repr__(self):
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return "Tuple(" + ", ". join([str(s) for s in self.spaces]) + ")"
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def to_jsonable(self, sample_n):
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# serialize as list-repr of tuple of vectors
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return [space.to_jsonable([sample[i] for sample in sample_n]) \
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for i, space in enumerate(self.spaces)]
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def from_jsonable(self, sample_n):
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return zip(*[space.from_jsonable(sample_n[i]) for i, space in enumerate(self.spaces)])
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