old_version/solver.py
def clear_possible_coordinates(self) -> None:
        """
        Clears lists of possible digits for all blank cells' coordinates.
        :return: None
        """
        for coordinate in self.s.possible_digits_in_cells:
            self.s.possible_digits_in_cells[coordinate] = []
        return None

        Clears lists of possible digits for all blank cells' coordinates.
        :return: None
        
Clears lists of possible digits for all blank cells' coordinates.
Clears lists of possible digits for all blank cells ' coordinates .
def clear_possible_coordinates(self) -> None:
        for coordinate in self.s.possible_digits_in_cells:
            self.s.possible_digits_in_cells[coordinate] = []
        return None
def clear_possible_coordinates ( self ) -> None : for coordinate in self . s . possible_digits_in_cells : self . s . possible_digits_in_cells [ coordinate ] = [ ] return None
Clears lists of possible digits for all blank cells' coordinates.
Clears lists of possible digits for all blank cells ' coordinates .
"""
        Clears lists of possible digits for all blank cells' coordinates.
        :return: None
        """
None
self