Converting NumPy array into Python List structure?

Question

How do I convert a NumPy array to a Python List (for example [[1,2,3],[4,5,6]] ), and do it reasonably fast?

Answer 1

You can use tolist() method for converting NumPy array into Python List structure:-

import numpy as np

np.array([[1,2,3],[4,5,6]]).tolist()

One important point to note that this method converts the values from whatever numpy type they may have (e.g. np.int32 or np.float32) to the "nearest compatible Python type".  So, if you wish to preserve the numpy data types, you could call list() on your array instead, and you'll end up with a list of numpy scalars.

To know more about this you can have a look at the following video tutorial:-