Version 3.0.2
matplotlib
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matplotlib.axis.XAxis.grid

XAxis.grid(b=None, which='major', **kwargs)

Configure the grid lines.

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)