matrix-multiplication.py

def matrix_multiplication(a, b):
    if len(b) == 0 or len(a) == 0:
        return []

    c = []
    for i in range(len(a)):
        c.append([])
        for j in range(len(b[0])):
            c[-1].append(0.0)

    for i in range(len(a)):
        for j in range(len(b[0])):
            total = 0
            for k in range(len(a[0])):
                total += a[i][k] * b[k][j]
            c[i][j] = total

    return c