Translate some code form C++ (complex vector)

[CarnariusXx]

Hi, I'm try to trnslate some code form c++ with complex numbers stack in vector. In C++ I've

vector<complex<double>> test(vector<complex<double>> T)
{
    int N = T.size();

    complex<double> S;
    vector<complex<double>> out;

    for (int k=0; k<K; k++)
    {
        ...
        }
        output.push_back(S);
    }
    return out;
}

I did in Python:

T = np.array([])
test = T = complex(0,0)
N = 1000
S = complex(0,0)
k = 0
n = 0

for k in range(k, 10):
    for n in range(n, 10):
       ...
        S += T[n] * w

And I've an error

Error:
'complex' object is not subscriptable

Does anyone will help me here?