plt.legend(loc='upper left',ncol=2,fontsize=20,facecolor='w',frameon=False,)
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This code snippet adds a legend to a plot in Python using the `matplotlib` library.
- `loc='upper left'` specifies the location of the legend in the plot. In this case, it's the upper left corner.
- `ncol=2` specifies the number of columns in the legend. In this case, there are two columns.
- `fontsize=20` sets the font size of the legend to 20.
- `facecolor='w'` sets the background color of the legend to white.
- `frameon=False` removes the frame around the legend.
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