How to make matrices in Python?

Question

I\'ve googled it and searched StackOverflow and YouTube.. I just can\'t get matrices in Python to click in my head. Can someone please help me? I\'m just trying to create a

Answer 1

you can also use append function

b = [ ]

for x in range(0, 5):
    b.append(["O"] * 5)

def print_b(b):
    for row in b:
        print " ".join(row)