remove paddle.nn.Sequential to fix dygraph to static error (#48477)

python/paddle/nn/__init__.py

@@ -17,7 +17,7 @@
 from ..fluid.dygraph.layers import Layer  # noqa: F401
 from .layer.container import LayerList  # noqa: F401
 from .layer.container import ParameterList  # noqa: F401
-from .layer.container import Sequential  # noqa: F401
+from ..fluid.dygraph.container import Sequential  # noqa: F401
 
 from .clip import ClipGradByGlobalNorm  # noqa: F401
 from .clip import ClipGradByNorm  # noqa: F401

python/paddle/nn/layer/container.py

@@ -299,79 +299,6 @@ class LayerDict(Layer):
                 self.add_sublayer(kv[0], kv[1])
 
 
-class Sequential(Layer):
-    """Sequential container.
-    Sub layers will be added to this container in the order of argument in the constructor.
-    The argument passed to the constructor can be iterable Layers or iterable name Layer pairs.
-
-    Parameters:
-        layers(Layer|list|tuple): Layer or list/tuple of iterable name Layer pair.
-
-    Examples:
-        .. code-block:: python
-
-            import paddle
-
-            data = paddle.uniform(shape=[30, 10], dtype='float32')
-            # create Sequential with iterable Layers
-            model1 = paddle.nn.Sequential(
-                paddle.nn.Linear(10, 1), paddle.nn.Linear(1, 2)
-            )
-            model1[0]  # access the first layer
-            res1 = model1(data)  # sequential execution
-
-            # create Sequential with name Layer pairs
-            model2 = paddle.nn.Sequential(
-                ('l1', paddle.nn.Linear(10, 2)),
-                ('l2', paddle.nn.Linear(2, 3))
-            )
-            model2['l1']  # access l1 layer
-            model2.add_sublayer('l3', paddle.nn.Linear(3, 3))  # add sublayer
-            res2 = model2(data)  # sequential execution
-
-    """
-
-    def __init__(self, *layers):
-        super().__init__()
-        if len(layers) > 0 and isinstance(layers[0], (list, tuple)):
-            for name, layer in layers:
-                self.add_sublayer(name, layer)
-        else:
-            for idx, layer in enumerate(layers):
-                self.add_sublayer(str(idx), layer)
-
-    def __getitem__(self, name):
-        if isinstance(name, slice):
-            return self.__class__(*(list(self._sub_layers.values())[name]))
-        elif isinstance(name, str):
-            return self._sub_layers[name]
-        else:
-            if name >= len(self._sub_layers):
-                raise IndexError('index {} is out of range'.format(name))
-            elif name < 0 and name >= -len(self._sub_layers):
-                name += len(self._sub_layers)
-            elif name < -len(self._sub_layers):
-                raise IndexError('index {} is out of range'.format(name))
-            return list(self._sub_layers.values())[name]
-
-    def __setitem__(self, name, layer):
-        assert isinstance(layer, Layer)
-        setattr(self, str(name), layer)
-
-    def __delitem__(self, name):
-        name = str(name)
-        assert name in self._sub_layers
-        del self._sub_layers[name]
-
-    def __len__(self):
-        return len(self._sub_layers)
-
-    def forward(self, input):
-        for layer in self._sub_layers.values():
-            input = layer(input)
-        return input
-
-
 class ParameterList(Layer):
     """ParameterList Container.