change the size of front

hi, I want to change the size of the front in a legend, i wrote this small program and it got to me this message error!!! from pylab import * plot([1,2,3],'r') legend('this',prop = FontProperties('smaller') ) show() NameError: name 'FontProperties' is not defined thanks -- View this message

fonction in python

Hello, If we write = x^2 and if I give to the program the values of x, it will going to calculate the values of y, and also for x. But it is possible ? that is if I give to the program the values of X and Y, it will indicate to me the relation between the two variables, in the other hand