Geoffrey Zhu wrote:

Hi,

I am writing a function that would take a list of datetime objects and a list of single letter characters (such as ["A","B","C"]). The number of items tend to be big and both the list and the numpy array have all the functionalities I need.

Do you think I should use numpy arrays or the regular lists?

If lists have all the functionality that you need, then I would probably recommend sticking with them if the contents are going to be objects rather than numbers. numpy object arrays can be tricky. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco