#!/usr/bin/python3
import matplotlib
matplotlib.use('Agg') #Non interactive backed
import matplotlib.pyplot as plt
import numpy as np


def main():
	x=np.linspace(0,10,100)
	print (x.shape)
	y=x**2
	print
	z=3x+4
	plt.plot(x,y,'r-',linewidth=2)
	plt.xlabel('x')
	plt.ylabel('y=x^2')
	plt.title('quadratic function')
	plt.grid(True)
	#plt.show()#NONONONO
	plt.savefig("graf1.png",dpi=300,transparent=True)
	#me morfi pinaka
#	for i in range(x.shape[0]):
	#	print (x[i])
	#ektiposi me morfi listas
	#for el in x:
	
	#	print (el)





if __name__=="__main__":
	main()