Python uuid 模块，NAMESPACE_DNS 实例源码

def upload_avatar():
    u = g.user
    if 'photo' in request.files:
        form = request.form
        filename = str(uuid3(NAMESPACE_DNS, str(u.id) + u.username + str(time.time()))).replace('-','')
        try:
            x = int(form['x'])
            y = int(form['y'])
            w = int(form['nw'])
            h = int(form['nh'])
            img = Image.open(request.files['photo'])
            format = img.format
            croped_img = crop_img(img, x, y, w, h)
            filename = save_avatar(croped_img, filename, format)
            url_path = current_app.config['UPLOADED_PHOTOS_URL']
            old_name = u.avatar.split(url_path)[1]
            remove_avatar(old_name)
            u.avatar = url_path + filename
            u.save()
        except Exception as e:
            print(e)
            flash('????????2Mb?????', 'error')
    return redirect(url_for('user.setting_view'))

def randomUUIDField(self):
        """
        Return the unique uuid from uuid1, uuid3, uuid4, or uuid5.
        """
        uuid1 = uuid.uuid1().hex
        uuid3 = uuid.uuid3(
            uuid.NAMESPACE_URL,
            self.randomize(['python', 'django', 'awesome'])
        ).hex
        uuid4 = uuid.uuid4().hex
        uuid5 = uuid.uuid5(
            uuid.NAMESPACE_DNS,
            self.randomize(['python', 'django', 'awesome'])
        ).hex
        return self.randomize([uuid1, uuid3, uuid4, uuid5])

def setUp(self):
        """Setup test."""
        from uuid import uuid5, NAMESPACE_DNS

        class UUIDModel(db.Document):
            uuid = db.UUIDField()

        self.model_cls = UUIDModel
        uuid = uuid5(NAMESPACE_DNS, "This is a test")
        self.expected_data = {
            "uuid": uuid
        }
        self.data = json.dumps({"uuid": str(uuid)})
        self.hook = generate_object_hook(UUIDModel)

def setUp(self):
        """Setup class."""
        from uuid import uuid5, NAMESPACE_DNS
        self.encoder = GoodJSONEncoder()
        self.data = uuid5(NAMESPACE_DNS, "This is a test")
        self.expected = str(self.data)

def __init__(self, name, uuid=None):
        if uuid is None:
            self.uuid = uuid5(NAMESPACE_DNS, name).hex
        else:
            self.uuid = uuid
        self.name = name

def test_create_timeuuid_with_uuid4_string_should_fail(self):
        ''' creating a TimeUUID with a hex uuid4 should fail'''
        for i in range(1,100):
            u = uuid.uuid4()
            with self.assertRaises(ValueError) as cm:
                t = timeuuid.TimeUUID(s=u.hex)
            self.assertEqual(str(cm.exception), 'Invalid UUID type')
        for fn in [uuid.uuid3, uuid.uuid5]:
            for i in range(1,100):
                u = fn(uuid.NAMESPACE_DNS,str(os.urandom(10)))
                with self.assertRaises(ValueError) as cm:
                    t = timeuuid.TimeUUID(s=u.hex)
                self.assertEqual(str(cm.exception), 'Invalid UUID type')