import numpy as np
from cv2 import cv2

# Create a black image
img = np.zeros((512,512,3), np.uint8)

img = cv2.line(img,(0,0),(511,511),(0,0,255),1,cv2.LINE_AA)

img = cv2.rectangle(img,(384,0),(510,128),(0,255,0),3)

img = cv2.circle(img,(447,63), 63, (0,0,255), -1)

img = cv2.ellipse(img,(256,256),(100,50),0,0,180,255,-1)

pts = np.array([[10,5],[20,30],[70,20],[50,10]], np.int32)
pts = pts.reshape((-1,1,2))
img = cv2.polylines(img,[pts],True,(0,255,255))

font = cv2.FONT_HERSHEY_SIMPLEX
cv2.putText(img,'OpenCV',(10,500), font, 4,(255,255,255),2,cv2.LINE_AA)

# using cv show
cv2.imshow('hello', img)
# hold window
cv2.waitKey(0)
cv2.destroyAllWindows()