49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
"""This module contains the Square class."""
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class Square:
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"""A Square object represents a square on the board.
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The square's values will consist of a set of possible values for that
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square.
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The grid_id attribute identifies in which 9x9 grid the square belongs to.
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"""
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def __init__(self, line: int, column: int, values: set):
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self.line: int = line
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self.column: int = column
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self.grid: int = self.compute_grid()
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self.coordinates: tuple = (self.line, self.column)
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self.values: set = values
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def compute_grid(self) -> int:
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"""Given the coordinates, determine which grid the Square belongs to.
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The grids are numbered from 0 to 8, in the following configuration:
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0 1 2
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3 4 5
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6 7 8
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"""
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grid_mappings = [
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(0, 0), # grid 0
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(0, 1), # grid 1
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(0, 2), # grid 2
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(1, 0), # grid 3
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(1, 1), # grid 4
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(1, 2), # grid 5
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(2, 0), # grid 6
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(2, 1), # grid 7
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(2, 2), # grid 8
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]
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grid_coordinates = (self.line // 3, self.column // 3)
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grid_number = 0
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while grid_mappings[grid_number] != grid_coordinates:
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grid_number += 1
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if grid_number == 9:
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raise AssertionError("Board is invalid")
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return grid_number
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