YAxis.grid(self, b=None, which='major', **kwargs)
Parameters: b : bool or None Whether to show the grid lines. If any kwargs are supplied, it is assumed you want the grid on and b will be set to True. If b is None and there are no kwargs, this toggles the visibility of the lines. which : {'major', 'minor', 'both'} The grid lines to apply the changes on. **kwargs : Line2D properties Define the line properties of the grid, e.g.: grid(color='r', linestyle='-', linewidth=2)