Django Book 翻译

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Any keyword arguments passed to ``get_or_create()`` *except* an optional one called
``defaults`` will be used in a ``get()`` call. If an object is found, ``get_or_create()``
returns a tuple of that object and ``False`` . If an object is *not* found,
``get_or_create()`` will instantiate and save a new object, returning a tuple of the new
object and ``True`` . The new object will be created according to this algorithm:

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