How to display stacked bar chart horizontally?

Question

Below code:

labels = [\'G1\', \'G2\', \'G3\', \'G4\', \'G5\']
p1 = [20, 35, 30, 35, 7]
p2 = [25, 32, 34, 20, 55]
p3 = [21, 361, 341, 205,151]

width = 0.35