How to insert a letter inside matrix in Python?

I want to create an empty matrix and then insert letters inside.

s = np.zeros(2,3)
s[0,0]='A'

Output:

ValueError: could not convert string to float: 'A'

From my understanding matrix s only accepts numbers, so it rejects the string A. But is it possible to do it without complicated functions?

>Solution :

It can be done, just specify dtype=object:

s = np.zeros((2,3), dtype=object)
s[0,0]='A'