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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def singleton_per_scope(_cls, _scope=None, _renew=False, *args, **kwargs):
 """Instanciate a singleton per scope."""


    result = None

    singletons = SINGLETONS_PER_SCOPES.setdefault(_scope, {})

    if _renew or _cls not in singletons:
        singletons[_cls] = _cls(*args, **kwargs)

    result = singletons[_cls]

    return result