TypeError: drawKeypoints() missing required argument 'outImage' (pos 3)

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Hii, I'm new to opencv and python. I tried with a sample code to extract the features and I'm getting this error TypeError: drawKeypoints() missing required argument 'outImage' (pos 3) and my code goes like this

import numpy as np
import cv2
from matplotlib import pyplot as plt

img = cv2.imread('1.png',0)

# Initiate FAST object with default values
fast = cv2.FastFeatureDetector_create()

# find and draw the keypoints
kp = fast.detect(img,None)
img2 = cv2.drawKeypoints(img, kp, color=(255,0,0))

# Print all default params
print ("Threshold: ", fast.getInt('threshold'))
print ("nonmaxSuppression: ", fast.getBool('nonmaxSuppression'))
print ("neighborhood: ", fast.getInt('type'))
print ("Total Keypoints with nonmaxSuppression: ", len(kp))

cv2.imwrite('fast_true.png',img2)

# Disable nonmaxSuppression
fast.setBool('nonmaxSuppression',0)
kp = fast.detect(img,None)

print ("Total Keypoints without nonmaxSuppression: ", len(kp))

img3 = cv2.drawKeypoints(img, kp, color=(255,0,0))

cv2.imwrite('fast_false.png',img3)

Any suggestions on how to extract the features of an image to compare with webcam image will be helpful. Thanks.