print() is a function in Python 3

[cclauss]

flake8 testing of https://github.com/spmallick/learnopencv on Python 3.7.0

$ flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics

./tracking/tracker.py:4:68: E999 SyntaxError: invalid character in identifier
(major_ver, minor_ver, subminor_ver) = (cv2.__version__).split('.')
                                                                   ^
./HeadPose/headPose.py:42:29: E999 SyntaxError: invalid syntax
print "Camera Matrix :\n {0}".format(camera_matrix);
                            ^
./heatmap/generate_heatmap.py:121:33: E999 SyntaxError: invalid syntax
            print "processing %s" % frame_path
                                ^
./ImageAlignment/image_alignment.py:33:12: E999 SyntaxError: invalid syntax
    print sz
           ^
./Delaunay/delaunay.py:49:14: F821 undefined name 'xrange'
    for i in xrange(0,len(facets)) :
             ^
./EigenFace/EigenFace.py:63:26: E999 TabError: inconsistent use of tabs and spaces in indentation
		print("No images found")
                         ^
./ninjaEyeDetector/ninjaEyeDetector.py:38:14: F821 undefined name 'xrange'
    for i in xrange (0,len(faces)):
             ^
./RotationMatrixToEulerAngles/rotm2euler.py:85:39: E999 SyntaxError: invalid syntax
    print "\nInput Euler angles :\n{0}".format(e)
                                      ^
./imread/imread_examples.py:6:37: E999 SyntaxError: invalid syntax
print "flags :  cv2.IMREAD_GRAYSCALE"
                                    ^
./FacialAttractiveness/source/trainModel.py:25:10: E999 SyntaxError: invalid syntax
print corr
         ^
./FacialAttractiveness/source/cross_validation.py:24:8: E999 SyntaxError: invalid syntax
	print i
       ^
./FaceAverage/faceAverage.py:125:22: F821 undefined name 'xrange'
            for j in xrange(0, 3):
                     ^
./FaceAverage/faceAverage.py:126:26: F821 undefined name 'xrange'
                for k in xrange(0, len(points)):                    
                         ^
./FaceAverage/faceAverage.py:166:14: F821 undefined name 'xrange'
    for i in xrange(0, 3):
             ^
./FaceAverage/faceAverage.py:225:14: F821 undefined name 'xrange'
    for i in xrange(0, numImages):
             ^
./FaceAverage/faceAverage.py:264:14: F821 undefined name 'xrange'
    for i in xrange(0, len(imagesNorm)) :
             ^
./FaceAverage/faceAverage.py:267:18: F821 undefined name 'xrange'
        for j in xrange(0, len(dt)) :
                 ^
./FaceAverage/faceAverage.py:271:22: F821 undefined name 'xrange'
            for k in xrange(0, 3) :                
                     ^
./FaceSwap/faceSwap.py:74:22: F821 undefined name 'xrange'
            for j in xrange(0, 3):
                     ^
./FaceSwap/faceSwap.py:75:26: F821 undefined name 'xrange'
                for k in xrange(0, len(points)):                    
                         ^
./FaceSwap/faceSwap.py:100:14: F821 undefined name 'xrange'
    for i in xrange(0, 3):
             ^
./FaceSwap/faceSwap.py:153:14: F821 undefined name 'xrange'
    for i in xrange(0, len(hullIndex)):
             ^
./FaceSwap/faceSwap.py:168:14: F821 undefined name 'xrange'
    for i in xrange(0, len(dt)):
             ^
./FaceSwap/faceSwap.py:173:18: F821 undefined name 'xrange'
        for j in xrange(0, 3):
                 ^
./FaceSwap/faceSwap.py:182:14: F821 undefined name 'xrange'
    for i in xrange(0, len(hull2)):
             ^
./ImageMetrics/Python/brisquequality.py:206:34: E999 SyntaxError: invalid syntax
print "Score of the given image: ", qualityscore
                                 ^
./WarpTriangle/warpTriangle.py:21:14: F821 undefined name 'xrange'
    for i in xrange(0, 3):
             ^
./SeamlessCloning/laplacian_pyramid_blending.py:65:10: F821 undefined name 'xrange'
for i in xrange(1,len(combinedLaplacianPyramids)):
         ^
./Homography/virtual-billboard.py:31:69: E999 SyntaxError: invalid syntax
    print 'Click on four corners of a billboard and then press ENTER'
                                                                    ^
./Homography/perspective-correction.py:29:13: E999 SyntaxError: invalid syntax
    print '''
            ^
./FPS/frame_rate.py:19:78: E999 SyntaxError: invalid syntax
        print "Frames per second using video.get(cv2.cv.CV_CAP_PROP_FPS): {0}".format(fps)
                                                                             ^
./FaceMorph/faceMorph.py:47:14: F821 undefined name 'xrange'
    for i in xrange(0, 3):
             ^
./FaceMorph/faceMorph.py:92:14: F821 undefined name 'xrange'
    for i in xrange(0, len(points1)):
             ^
./barcode-QRcodeScanner/barcode-QRcodeScannerPy2.py:57:12: F821 undefined name 'xrange'
		for j in xrange(0,n):
           ^
./Colormap/colormap.py:39:14: F821 undefined name 'xrange'
    for i in xrange(0,4) :
             ^
./Colormap/colormap.py:40:18: F821 undefined name 'xrange'
        for j in xrange(0,3) :
                 ^
13    E999 TabError: inconsistent use of tabs and spaces in indentation
23    F821 undefined name 'xrange'
36

[vikasgupta-github]

Thanks for pointing it out. Not all code is tested for Python 3. Will fix them soon

[asmorkalov]

Addressed in #466