 The prefix Py- is used to show that something is related to Python . Examples of the use of this prefix in names of Python applications or libraries include Pygame , a binding of SDL to Python ( commonly used to create games ) ; PyS60 , an implementation for the Symbian S60 operating system ; PyQt and PyGTK , which bind Qt and GTK , respectively , to Python ; and PyPy , a Python implementation originally written in Python . 
