Note: The code samples in this tutorial uses
doctest to make sure
that they actually work. Since some code samples behave differently
under Linux, Windows, or Mac OS X, they contain doctest directives in
Note: Quite some code samples references the ctypes c_int type. This type is an alias to the c_long type on 32-bit systems. So, you should not be confused if c_long is printed if you would expect c_int - they are actually the same type.