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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_rule(self, start_col, start_row, end_col, end_row, width=0.5, color=(0,0,0)):
 """Adds a rule to the grid. The row and column numbers are those on the top left of the corresponding cell in the grid. So if the grid is 10x10, then the right hand edge of the grid will be column 10, and the bottom will be column 10. In other words there is one more rule-row and column than there are cell rows and columns."""

        self.rules.append(
            (start_col, start_row, end_col, end_row, width, color)
            )