Fixed #8534: getting the size of a file no longer opens it (at least for the...

        return self.storage.url(self.name)

    url = property(_get_url)

    def _get_size(self):

        self._require_file()

        return self.storage.size(self.name)

    size = property(_get_size)

    def open(self, mode='rb'):

        self._require_file()

        return super(FieldFile, self).open(mode)

>>> p2.mugshot.save("shot", ContentFile(image_data))

>>> os.remove(p2.mugshot.path)

>>> p2.delete()

# Bug #8534: FileField.size should not leave the file open.

>>> p3 = Person(name="Joan")

>>> p3.mugshot.save("shot", ContentFile(image_data))

# Get a "clean" model instance

>>> p3 = Person.objects.get(name="Joan")

# It won't have an opened file. This is a bit brittle since it depends on the

# the internals of FieldFile, but there's no other way of telling if the

# file's been opened or not.

>>> hasattr(p3.mugshot, '_file')

False

# After asking for the size, the file should still be closed.

>>> _ = p3.mugshot.size

>>> hasattr(p3.mugshot, '_file')

False

"""}

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