Python numpy Tutorial | How to identify the size of an array | How to get count of array elements

Hi guys...in this python numpy tutorial I have shown you many ways by which you can get the size of numpy array Or count of all the elements in numpy array.

[rajanikantasingha]

sir please help to understand that " size of python list changable where numpy array is not " or explanation on "once numpy array is created its size cannot change"