How to concatenate each row horizontally of a string array in python? [duplicate]

This is a numpy string array.

Column 1      Column 2      Column 3
A             B             C
a             b             c
A             B             C
a             b             c

I would like to concatenate each row horizontally and derive a new array with the same row number like the following:

Column 1
ABC
abc
ABC
abc

Thanks.