from sequana.viz.venn import plot_venn

A = set([1,2,3,4,5,6,7,8,9])
B = set([      4,5,6,7,8,9,10,11,12,13])
C = set([   3,4,5,6,7,8,9])
plot_venn((A, B, C), labels=("A", "B", "C"), title="my Venn3 diagram")