剛發現Python的with語句，很適合寫Clutter

subway-clutter-design.py

#!/usr/bin/env python3
#coding=utf-8
import sys
from contextlib import contextmanager
from gi.repository import Clutter

@contextmanager
def mk(class_name,*args,**kwargs):
    klass=getattr(Clutter,class_name)
    if 'constructor' in kwargs:
        klass=getattr(klass,kwargs['constructor'])
        del kwargs['constructor']
    obj=klass(*args,**kwargs)
    yield obj

Clutter.init(sys.argv)

with mk('Stage',constructor='get_default') as stage:
    with mk('Text') as label:
        label.set_text('LZSB')
        stage.add_actor(label)
    stage.show()

Clutter.main()