Unfortunately, Matplotlib does not make this easy: via the standard legend interface, it is only possible to create a single legend for the entire plot. If you ... ... <看更多>

Add a label= to each of your plot() calls, and then call legend(loc='upper left') . Consider this sample (tested with Python 3.8.0): ... <看更多>

However, when I call set_alpha on a legend handle, the color of the patch in the legend changes. Code for reproduction. import matplotlib.pyplot ... ... <看更多>

Excepted the fact that Latex font is not applied for legend and I don't understand why. Here the Python script : ... <看更多>