import matplotlib.pyplot as plt
x_value = list(range(1, 1001))
y_value = [x**2 for x in x_value]
plt.scatter(x_value, y_value, color = y_value, cmap = plt.cm.Blues,
edgecolors="none", s=40)
plt.show()

 import matplotlib.pyplot as plt
x_value = list(range(1, 1001))
y_value = [x**2 for x in x_value]
plt.scatter(x_value, y_value, c = y_value, cmap = plt.cm.Blues,
edgecolors="none", s=40)
plt.show()