31 lines
640 B
Python
31 lines
640 B
Python
import enum
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from collections import namedtuple
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# tag::color[]
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class Player(enum.Enum):
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black = 1
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white = 2
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@property
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def other(self):
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return Player.black if self == Player.white else Player.white
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# end::color[]
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# tag::points[]
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class Point(namedtuple('Point', 'row col')):
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def neighbors(self):
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return [
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Point(self.row - 1, self.col),
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Point(self.row + 1, self.col),
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Point(self.row, self.col - 1),
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Point(self.row, self.col + 1),
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]
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# end::points[]
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def __deepcopy__(self, memodict={}):
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# These are very immutable.
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return self
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