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Extracting circle centre coordinates using cv2.HoughCircles

Hi there!

I want to extract centre coordinates of detected circles using cv2. HoughCircles, here's the code-

import cv2
import numpy as np
def f(x): return

img = cv2.imread('C:/Users/Yardy/img1.png')
cimg = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
edges = cv2.Canny(cimg,50,150,apertureSize=3)
circles = cv2.HoughCircles(edges, cv2.HOUGH_GRADIENT, 1.2, 200,param2=30)

if circles is not None:
    circles = np.round(circles[0, :]).astype("int")
    X = circles

print X

When I run this code, in X I get the centre coordinates as well as the radius of the circle. How do I store the coordinates and radius in separate variables?

Also if my code detects more than one circle, I get an error -

Need more than one value to repack.

Can anybody help me?