# Here is Coordinate with OO methods for distance and equals. Note that this
# class does not follow the Python convention of using __eq__, so == will
# still compare addresses of Coordinate instances (in this code we call .equals explicitly)

import math
class Coordinate:
	x=0
	y=0

	def distance(self,point2):
		# sqrt of (change in x squared + change in y squared)
	
		changex=self.x-point2.x
		changey=self.y-point2.y
		d = math.sqrt(math.pow(changex,2)+math.pow(changey,2))
		return d
	def equals(self,point2):
		if ((self.x==point2.x) and (self.y==point2.y)):
			return True
		else:
			return False
		# note, short hand for above is:
		# return ((self.x==point2.x) and (self.y==point2.y))
		


# main program
c1 = Coordinate()
c1.x=3
c1.y=5
c2 = Coordinate()
c2.x=7
c2.y=9
distance = c1.distance(c2)
print distance
print c1.equals(c2)