if it will show you screen like above then numpy is installed in your system successfully and you are ready to start writing python program using numpy common functions of numpy here have listed few important functions that are used with numpy very frequently functions tasks array create numpy array ndim dimension of the array shape size of the array (number of rows and columnssize total number of elements in the array dtype type of elements in the arrayi int character reshape reshapes the array without changing the original shape resize reshapes the array alsochange the original shape arrange create sequence of numbers in an array itemsize size in bytes of each item diag create diagonal matrix vstack stacking vertically hstack stacking horizontally simple program using numpy array you can create numpy array by passing python list to it and using "np array()in this casepython creates the array we can see on the right herepage