import math
import pylab

y_values = []
x_values = []
number = 0.0

while number<math.pi*4:
      y_values.append(math.sin(number))
      x_values.append(number)
      number += 0.1

#plot the x and y values as red circles
pylab.plot(x_values,y_values,'ro')
pylab.show()