from django . contrib import admin
from nodes . models import Node
from nodes . models import NodeGroup
admin . site . register ( : Node ) )
admin . site . register ( NodeGroup )

from django . contrib import admin
from nodes . models import Node
from nodes . models import NodeGroup
admin . site . register ( Node )
admin . site . register ( NodeGroup )

次に示すpythonコードの誤りを修正しなさい。