problem in createBag.py

[sonal-bansal]

ValueError Traceback (most recent call last)
in ()
5 print("Calculating features for category", c)
6 image_names =os.listdir(c)
----> 7 kp_vector, des_vector = calcVectors(image_names,c)
8 # print(des_vector)
9 # defining category with the lowest number of keypoints

in calcVectors(img_list, c)
18
19 kp_vector = np.append(kp_vector, kp_i, axis=0)
---> 20 des_vector = np.append(des_vector, des_i, axis=0)
21 curr_n += 1
22 print("Image", curr_n, "of", max_n)

~\Anaconda3\lib\site-packages\numpy\lib\function_base.py in append(arr, values, axis)
5150 values = ravel(values)
5151 axis = arr.ndim-1
-> 5152 return concatenate((arr, values), axis=axis)

ValueError: all the input arrays must have same number of dimensions