Fixing “None” Not Callable Error in Mypy

Photo by David Travis on Unsplash
status = {Bishop: self.validate_move_bishop,
King: self.validate_move_king,
Knight: self.validate_move_knight,
Pawn: self.validate_move_pawn,
Queen: self.validate_move_queen,
Rook: self.validate_move_rook,
}.get(type(self._board[start]))(start, end)
status = {...}.get(type(self._board[start]),
lambda *args: False)(start, end)

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