x0 = 0
y0 = 0
x1 = 4
y1 = 3

class Distances():

	def pythagorean (self, x0, y0, x1, y1):

		diff_x, diff_y = self.difference (x0, y0, x1, y1)
		diff_x_squared = diff_x * diff_x
		diff_y_squared = diff_y * diff_y
		distance = (diff_y_squared + diff_x_squared) ** 0.5
		return distance

	def difference(self, x0, y0, x1, y1):
		return (x0 - x1), (Y0 - y1)


dis = Distances()
answer = dis.pythagorean(x0, y0, x1, y1)
print(answer)