



'''simple docstring'''




from __future__ import annotations


def        lowerCAmelCase_     (			_lowerCamelCase:     tuple[int, int] ,   _lowerCamelCase:     int      ):
		__SCREAMING_SNAKE_CASE ,		__SCREAMING_SNAKE_CASE :	str					 =	position
		__SCREAMING_SNAKE_CASE :	List[Any]					 =	[
		    (y + 1, x + 2),
		    (y - 1, x + 2),
		    (y + 1, x - 2),
		    (y - 1, x - 2),
		    (y + 2, x + 1),
		    (y + 2, x - 1),
		    (y - 2, x + 1),
		    (y - 2, x - 1),
		]
		__SCREAMING_SNAKE_CASE :	Optional[Any]					 =	[]

		for position in positions:
				__SCREAMING_SNAKE_CASE ,		__SCREAMING_SNAKE_CASE :	Optional[int]					 =	position
				if 0 <= y_test < n and 0 <= x_test < n:
						permissible_positions.append(_lowerCamelCase      )

		return permissible_positions


def        lowerCAmelCase_     (			_lowerCamelCase:     list[list[int]]      ):
		return not any(elem == 0 for row in board for elem in row      )


def        lowerCAmelCase_     (			_lowerCamelCase:     list[list[int]] ,   _lowerCamelCase:     tuple[int, int] ,   _lowerCamelCase:     int      ):






		if is_complete(_lowerCamelCase      ):
				return True

		for position in get_valid_pos(_lowerCamelCase ,   len(_lowerCamelCase      )      ):
				__SCREAMING_SNAKE_CASE ,		__SCREAMING_SNAKE_CASE :	int					 =	position

				if board[y][x] == 0:
						__SCREAMING_SNAKE_CASE :	str					 =	curr + 1
						if open_knight_tour_helper(_lowerCamelCase ,   _lowerCamelCase ,   curr + 1      ):
								return True
						__SCREAMING_SNAKE_CASE :	Tuple					 =	0

		return False


def        lowerCAmelCase_     (			_lowerCamelCase:     int      ):
		__SCREAMING_SNAKE_CASE :	Any					 =	[[0 for i in range(_lowerCamelCase      )] for j in range(_lowerCamelCase      )]

		for i in range(_lowerCamelCase      ):
				for j in range(_lowerCamelCase      ):
						__SCREAMING_SNAKE_CASE :	str					 =	1
						if open_knight_tour_helper(_lowerCamelCase ,   (i, j) ,   1      ):
								return board
						__SCREAMING_SNAKE_CASE :	List[str]					 =	0

		__SCREAMING_SNAKE_CASE :	Tuple					 =	F"Open Kight Tour cannot be performed on a board of size {n}"
		raise ValueError(_lowerCamelCase      )


if __name__ == "__main__":
						import doctest

						doctest.testmod()







'''simple docstring'''




from unittest.mock import Mock, patch

from file_transfer.send_file import send_file


@patch("""socket.socket"""      )
@patch("""builtins.open"""      )
def        lowerCAmelCase_     (			_lowerCamelCase:     Dict ,   _lowerCamelCase:     List[Any]      ):
		# ===== initialization =====
		__SCREAMING_SNAKE_CASE :	Optional[int]					 =	Mock()
		__SCREAMING_SNAKE_CASE :	Optional[int]					 =	conn, Mock()
		__SCREAMING_SNAKE_CASE :	str					 =	iter([1, None]      )
		__SCREAMING_SNAKE_CASE :	Any					 =	lambda _lowerCamelCase      : next(_lowerCamelCase      )

		# ===== invoke =====
		send_file(filename="""mytext.txt""" ,   testing=_lowerCamelCase      )

		# ===== ensurance =====
		sock.assert_called_once()
		sock.return_value.bind.assert_called_once()
		sock.return_value.listen.assert_called_once()
		sock.return_value.accept.assert_called_once()
		conn.recv.assert_called_once()

		file.return_value.__enter__.assert_called_once()
		file.return_value.__enter__.return_value.read.assert_called()

		conn.send.assert_called_once()
		conn.close.assert_called_once()
		sock.return_value.shutdown.assert_called_once()
		sock.return_value.close.assert_called_once()