How to track an object by its color in Python?

How about companions? I have the following question, how do I rewrite this code in Python language?

#include <iostream>
#include <string>
#include <vector>

#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>

using namespace cv;
using namespace std;

int main()
{
Mat img, hsv, binary;

VideoCapture cap(0);

// verificar si se ha podido acceder a la web cam
if (!cap.isOpened()) {
    cout << "Error al acceder a la web cam." << endl;
    system("pause");
    return -1;
}

while (true)
{
    // obtener frame de la web cam
    cap >> img;

    // convertir imagen RGB a HSV 
    cvtColor(img, hsv, CV_BGR2HSV);

    // aplicar filtro para color deseado
    inRange(hsv, Scalar(110, 50, 50), Scalar(130, 255, 255), binary);

    // aplicar tranformaciones morfologicas (extrae la region de interes)
    Mat element = getStructuringElement(MORPH_RECT, Size(15, 15));
    erode(binary, binary, element);
    dilate(binary, binary, element);

    // buscar contornos en la imagen binaria
    vector< vector<Point> > contours;
    findContours(binary, contours, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_SIMPLE);        

    // dibujar todos los contornos encontrados
    drawContours(binary, contours, -1, Scalar(255), CV_FILLED);

    // dibujar rectangulo y texto con coordenadas (x, y)
    for (vector<Point> contour : contours) {
        // dibujar rectangulo
        Rect r = boundingRect(contour);
        rectangle(img, r, CV_RGB(255, 0, 0), 2, CV_AA, 0);

        Point center(r.x + (r.width / 2), r.y + (r.height / 2));

        ostringstream str;
        str << center.x << "," << center.y;

        // mostrar texto (x, y)
        putText(img, str.str(), center, FONT_HERSHEY_COMPLEX_SMALL, 0.60, CV_RGB(0, 255, 0), 1, CV_AA);
    }

    imshow("Track Color", img);
    imshow("Track Color - Binary", binary);

    // terminar la aplicacion con la tecla ESC
    if(waitKey(30) == 27) break;

}

return 0;
}

The code has been taken from this page link