remove set_value numpy (#41017)

* remove set_value numpy

* optimize code

* optimize to_tensor

* use common function

Co-authored-by: root <root@yq01-sys-hic-k8s-v100-box-a225-0186.yq01.baidu.com>

python/paddle/fluid/dygraph/varbase_patch_methods.py

@@ -20,6 +20,7 @@
 
 import paddle
 from .. import framework
+from ..framework import convert_np_dtype_to_dtype_
 from .. import core
 from .. import unique_name
 from ..framework import Variable, Parameter, ParamBase, _getitem_impl_, _setitem_impl_, EagerParamBase
@@ -172,25 +173,24 @@ def set_value(self, value):
             else:
                 self.value().set_string_list(value)
         else:
-            value_np = value
-            if isinstance(value, base_tensor):
-                value_np = value.numpy()
-
-            self_tensor_np = self.numpy()
-
-            assert self_tensor_np.shape == value_np.shape, \
+            assert self.shape == list(value.shape),  \
                 "Variable Shape not match, Variable [ {} ] need tensor with shape {} but load set tensor with shape {}".format(
-                    self.name, self_tensor_np.shape, value_np.shape)
+                    self.name, self.shape, value.shape)
+
+            if isinstance(value, base_tensor):
+                dtype = value.dtype
+            else:
+                dtype = convert_np_dtype_to_dtype_(value.dtype)
 
-            assert self_tensor_np.dtype == value_np.dtype, \
+            assert self.dtype == dtype, \
                 "Variable dtype not match, Variable [ {} ] need tensor with dtype {}  but load tensor with dtype {}".format(
-                    self.name, self_tensor_np.dtype, value_np.dtype)
+                    self.name, self.dtype, dtype)
 
             # NOTE(wuweilong): self could be VarBase or Tensor, the subsequent behavior are defined in different files
             # if self is VarBase, method value() return Variable that bindded in imperative.cc, get_tensor() bindded in pybind.cc
             # if self is Tensor, method value() return self that defined in this file, get_tensor() defined in eager_method.cc
             # this Interface behavior will be unifed in the future.
-            self.value().get_tensor().set(value_np,
+            self.value().get_tensor().set(value,
                                           framework._current_expected_place())
 
     @framework.dygraph_only