print "Plotting a circle"
print "For plotting a circle we need angle 'x' and radius r"
print "Consider the radius to be 5 to be able to plot"
r=5
print "Thus circle with radius 5 can be plotted"
polar_plot(5, (x, 0, 2*pi), color='blue')



Result:

Plotting a circle
For plotting a circle we need angle 'x' and radius r
Consider the radius to be 5 to be able to plot
Thus circle with radius 5 can be plotted