Shaded region below a line
import matplotlib.pyplot as plt
# Data
x = [0,1,2,3,4,5,6,7,8,9]
y1 = [10,20,40,55,58,55,50,40,20,10]
# Shade the area between y1 and line y=0
plt.fill_between(x, y1, 0,
facecolor="orange", # The fill color
color='...