Remove or adapt border of frame of legend using matplotlib

问题

When plotting a plot using matplotlib:

1. How to remove the box of the legend?
2. How to change the color of the border of the legend box?
3. How to remove only the border of the box of the legend?

回答1:

When plotting a plot using matplotlib:

How to remove the box of the legend?

plt.legend(frameon=False)

How to change the color of the border of the legend box?

leg = plt.legend()
leg.get_frame().set_edgecolor('b')

How to remove only the border of the box of the legend?

leg = plt.legend()
leg.get_frame().set_linewidth(0.0)

回答2:

One more related question, since it took me forever to find the answer:

How to make the legend background blank (i.e. transparent, not white):

legend = plt.legend()
legend.get_frame().set_facecolor('none')

Warning, you want 'none' (the string). None means the default color instead.

来源：https://stackoverflow.com/questions/25540259/remove-or-adapt-border-of-frame-of-legend-using-matplotlib