Created
June 3, 2019 09:05
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Adapted from "Think Python" exercise 3.3
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| from typing import Optional | |
| class SquareDrawer: | |
| def __init__(self, side_size: int = 5, side_amount: int = 4) -> None: | |
| self._check_params(side_size, side_amount) | |
| def draw_square( | |
| self, side_size: Optional[int] = None, side_amount: Optional[int] = None | |
| ) -> None: | |
| self._check_params(side_size, side_amount) | |
| self._print_square_row() | |
| for _ in range(2): | |
| for _ in range(self.nb_chars): | |
| self._print_square_row(sep='|', char=' ') | |
| self._print_square_row() | |
| @property | |
| def nb_squares_by_row(self) -> int: | |
| return int(self.side_amount / 2) | |
| @property | |
| def nb_chars(self) -> int: | |
| return self.side_size - 2 | |
| def _check_params(self, side_size: Optional[int], side_amount: Optional[int]) -> None: | |
| self._check_side_size(side_size) | |
| self._check_side_amount(side_amount) | |
| def _check_side_size(self, side_size: Optional[int]) -> None: | |
| if side_size is not None: | |
| if side_size < 1: | |
| raise ValueError(f'"side_size" should be no less than 1') | |
| else: | |
| self.side_size = side_size | |
| def _check_side_amount(self, side_amount: Optional[int]) -> None: | |
| if side_amount is not None: | |
| if side_amount % 2: | |
| raise ValueError(f'"side_amount" should be even') | |
| elif side_amount < 1: | |
| raise ValueError(f'"side_amount" should be no less than 1') | |
| else: | |
| self.side_amount = side_amount | |
| def _print_square_row(self, sep: str = '+', char: str = '-') -> None: | |
| print(f'{sep} ', end='') | |
| print((f'{char} ' * self.nb_chars + sep) * self.nb_squares_by_row) | |
| sd: SquareDrawer = SquareDrawer() | |
| sd.draw_square() | |
| sd.draw_square(5, 10) | |
| sd.draw_square(15, 6) |
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