You are reading documentation for the unreleased version of Matplotlib. Try searching for the released version of this page instead?
Applications are open for the 2018 John Hunter Matplotlib Summer Fellowship. Apply now!
Version 2.2.2.post1772+gd9240e24b
matplotlib
Fork me on GitHub

matplotlib.axis.YAxis.grid

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

Set the axis grid on or off; b is a boolean. Use which = 'major' | 'minor' | 'both' to set the grid for major or minor ticks.

If b is None and len(kwargs)==0, toggle the grid state. If kwargs are supplied, it is assumed you want the grid on and b will be set to True.

kwargs are used to set the line properties of the grids, e.g.,

xax.grid(color='r', linestyle='-', linewidth=2)