Iterating over the number of axes of a 4D numpy array

Question

this is probably very simple and I'm just overlooking something but here you go:

I have a 4D array in shape: (x,y,z,t)

How do i iterate over the number of axis of that array wit a for-loop? Not along a single axis but once for every axis?

Something like this:

for a in range(data.shape):
            data_20 = np.percentile(data_20, 80, axis=a, keepdims=True)

Thanks!

Answer 1

To iterate over range of dimensions of a numpy.array use .ndim

Code:

# convert data to numpy.array if data is a list

for i in range(np.array(data).ndim):
    print(i)

Output:

0
1
2
3