python *args and **kwargs

http://stackoverflow.com/questions/3394835/args-and-kwargs

fun(callback, *args, **kwargs)

    callback( *args, **kwargs)

args

：[/code]arguments ，tuple

kwargs

：keyword arguments，dict

*args

= list of arguments -[/code]as positional arguments

**kwargs

= dictionary - whose keys become separate keyword arguments and the values become values of these arguments.