importmatplotlib.pyplotaspltimportnumpyasnpplt.style.use('_mpl-gallery')# make data:np.random.seed(1)x=[2,4,6]D=np.random.gamma(4,size=(3,50))# plot:fig,ax=plt.subplots()ax.eventplot(D,orientation="vertical",lineoffsets=x,linewidth=0.75)ax.set(xlim=(0,8),xticks=np.arange(1,8),ylim=(0,8),yticks=np.arange(1,8))plt.show()

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