title: Python method overload based on argument count?
body: <p>If I call QApplication's <strong>init</strong> without arguments i get</p>
  
  <pre>
  TypeError: arguments did not match any overloaded call:
    QApplication(list-of-str): not enough arguments
    QApplication(list-of-str, bool): not enough arguments
    QApplication(list-of-str, QApplication.Type): not enough arguments
    QApplication(Display, int visual=0, int colormap=0): not enough arguments
    QApplication(Display, list-of-str, int visual=0, int cmap=0): not enough arguments
  </pre>
  
  <p>very interesting! How can I write a class like that?? I mean, every trick for this kind of function overloading I saw did not involve explicit signatures.</p>