Matplotlib: Draw lines from x axis to points

Question

I have a bunch of points that I am trying to plot using matplotlib. For each point (a,b) I want to draw the line X = a for Y in [0,b]. Any idea how to do this?

Answer 1

Use a stem plot

The least cumbersome solution employs matplotlib.pyplot.stem

import matplotlib.pyplot as plt
x = [1. , 2., 3.5]
y = [2.3, 4., 6.]
plt.xlim(0,4)
plt.stem(x,y)
plt.show()