ValueError resizing an ndarray
You cannot resize NumPy arrays that share data with another array in-place using the resize method by default. Instead, you can create a new resized array using the np.resize function:
np.resize(a, new_shape)or you can disable reference checking using:
a.resize(new_shape, refcheck=False)The likely reason you are only seeing it with a debugger is that the debugger references the array to e.g. print it. Also, the debugger may not store references to temporary arrays before you assign them into a variable, which probably explains why the other script works.