Line with labels (xlabel, ylabel)

import matplotlib.pyplot as plt

x = [ 3,  4,   5,  6 ]
y = [ 23, 42, 10, 19 ]

plt.plot(x, y)
plt.ylabel("height of things")
plt.xlabel("base values")

plt.show()
#plt.savefig('line_with_labels.png')

documentation of matplotlib.pyplot.plot