Remove or adapt the border of the legend frame using matplotlib

Question

When plotting using matplotlib:

• How to remove a legend field?
• How to change the border color of a legend window?
• How to remove only the legend window frame?

Answer 1

When plotting using matplotlib:

How to remove a legend field?

plt.legend(frameon=False) 

How to change the border color of a legend window?

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

How to remove only the legend window frame?

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

Answer 2

Another related question, since it took forever to find the answer:

How to make the background image of a legend empty (i.e. transparent, not white):

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

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