How can I prevent the TypeError: list indices must be integers, not tuple when copying a python list to a numpy array?

Question

I am trying to create 3 numpy arrays/lists using data from another array called mean_data as follows:

---> 39 R = np.array(mean_data[:,0])
     40 P = np.         


        

Answer 1

Just if someone is having this issue and hadn't done list[index, sub-index], you could be having the problem because you're missing a comma between two arrays in an array of arrays (It happened to me).