def calculateTransitions(im):
h, w = im.shape[0], im.shape[1]
prev = im[0,0]
n = 0
for x in range(1, h):
for y in range(1, w):
curr = im[x,y]
# check if the is black to white transition
n = n+1 if curr == 255 and prev == 0 else n
prev = curr
return n

There is something wrong with
n = n+1 if curr == 255 and prev == 0 else n
prev = curr
return n
this part

please solve getting the same error

NameError Traceback (most recent call last)
in
54 return n
55
---> 56 boundingBox = findBB(binary)
57 cropImg = binary[boundingBox[0]:boundingBox[1], boundingBox[2]:boundingBox[3]]
58 centroid = findCentroid(cropImg)

in findBB(im)
10 right, bottom = 0, 0
11
---> 12 for x in xrange(h):
13 for y in xrange(w):
14 if (im[x,y] == 0):

NameError: name 'xrange' is not defined

ValueError Traceback (most recent call last)
in
55 return n
56
---> 57 boundingBox = findBB(binary)
58 cropImg = binary[boundingBox[0]:boundingBox[1], boundingBox[2]:boundingBox[3]]
59 centroid = findCentroid(cropImg)

in findBB(im)
13 for x in range(h):
14 for y in range(w):
---> 15 if (im[x,y] == 0):
16 right = x if x > right else right
17 left = x if x < left else left

ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

I have tried a lot but still not able to solve this error. Please help