diff --git a/mindspore/ccsrc/ir/dtype_extends.cc b/mindspore/ccsrc/ir/dtype_extends.cc
index 732872cb4f..b41631c1ce 100644
--- a/mindspore/ccsrc/ir/dtype_extends.cc
+++ b/mindspore/ccsrc/ir/dtype_extends.cc
@@ -20,8 +20,6 @@
 #include <algorithm>
 #include "utils/log_adapter.h"
 #include "pipeline/static_analysis/abstract_value.h"
-#include "pybind_api/api_register.h"
-#include "pybind_api/export_flags.h"
 
 namespace mindspore {
 TypePtr TypeAnything::DeepCopy() const { return kAnyType; }
@@ -425,134 +423,6 @@ bool IsSubType(TypePtr const &t1, TypePtr const &t2) {
   }
 }
 
-REGISTER_PYBIND_DEFINE(
-  typing, ([](py::module *const m) {
-    auto m_sub = m->def_submodule("typing", "submodule for dtype");
-    py::enum_<TypeId>(m_sub, "TypeId");
-    (void)m_sub.def("is_subclass", &IsIdentidityOrSubclass, "is equal or subclass");
-    (void)m_sub.def("load_type", &TypeIdToType, "load type");
-    (void)m_sub.def(
-      "dump_type", [](const TypePtr &t) { return t->type_id(); }, "dump type");
-    (void)m_sub.def("str_to_type", &StringToType, "string to typeptr");
-    (void)py::class_<Type, std::shared_ptr<Type>>(m_sub, "Type")
-      .def_readonly(PYTHON_DTYPE_FLAG, &mindspore::Type::parse_info_)
-      .def("__eq__",
-           [](const TypePtr &t1, const TypePtr &t2) {
-             if (t1 != nullptr && t2 != nullptr) {
-               return *t1 == *t2;
-             }
-             return false;
-           })
-      .def("__hash__", &Type::hash)
-      .def("__str__", &Type::ToString)
-      .def("__repr__", &Type::ReprString)
-      .def("__deepcopy__", [](const TypePtr &t, py::dict) {
-        if (t == nullptr) {
-          return static_cast<TypePtr>(nullptr);
-        }
-        return t->DeepCopy();
-      });
-    (void)py::class_<Number, Type, std::shared_ptr<Number>>(m_sub, "Number").def(py::init());
-    (void)py::class_<Bool, Type, std::shared_ptr<Bool>>(m_sub, "Bool")
-      .def(py::init())
-      .def(py::pickle(
-        [](const Bool &) {  // __getstate__
-          return py::make_tuple();
-        },
-        [](const py::tuple &) {  // __setstate__
-          return std::make_shared<Bool>();
-        }));
-    (void)py::class_<Int, Type, std::shared_ptr<Int>>(m_sub, "Int")
-      .def(py::init())
-      .def(py::init<int>(), py::arg("nbits"))
-      .def(py::pickle(
-        [](const Int &t) {  // __getstate__
-          /* Return a tuple that fully encodes the state of the object */
-          return py::make_tuple(py::int_(t.nbits()));
-        },
-        [](const py::tuple &t) {  // __setstate__
-          if (t.size() != 1) {
-            throw std::runtime_error("Invalid state!");
-          }
-          /* Create a new C++ instance */
-          Int data(t[0].cast<py::int_>());
-          return data;
-        }));
-    (void)py::class_<UInt, Type, std::shared_ptr<UInt>>(m_sub, "UInt")
-      .def(py::init())
-      .def(py::init<int>(), py::arg("nbits"))
-      .def(py::pickle(
-        [](const UInt &t) {  // __getstate__
-          /* Return a tuple that fully encodes the state of the object */
-          return py::make_tuple(py::int_(t.nbits()));
-        },
-        [](const py::tuple &t) {  // __setstate__
-          if (t.size() != 1) {
-            throw std::runtime_error("Invalid state!");
-          }
-          /* Create a new C++ instance */
-          UInt data(t[0].cast<py::int_>());
-          return data;
-        }));
-    (void)py::class_<Float, Type, std::shared_ptr<Float>>(m_sub, "Float")
-      .def(py::init())
-      .def(py::init<int>(), py::arg("nbits"))
-      .def(py::pickle(
-        [](const Float &t) {  // __getstate__
-          /* Return a tuple that fully encodes the state of the object */
-          return py::make_tuple(py::int_(t.nbits()));
-        },
-        [](const py::tuple &t) {  // __setstate__
-          if (t.size() != 1) {
-            throw std::runtime_error("Invalid state!");
-          }
-          /* Create a new C++ instance */
-          Float data(t[0].cast<py::int_>());
-          return data;
-        }));
-    (void)py::class_<List, Type, std::shared_ptr<List>>(m_sub, "List")
-      .def(py::init())
-      .def(py::init<std::vector<TypePtr>>(), py::arg("elements"));
-    (void)py::class_<Tuple, Type, std::shared_ptr<Tuple>>(m_sub, "Tuple")
-      .def(py::init())
-      .def(py::init<std::vector<TypePtr>>(), py::arg("elements"));
-    (void)py::class_<TensorType, Type, std::shared_ptr<TensorType>>(m_sub, "TensorType")
-      .def(py::init())
-      .def(py::init<TypePtr>(), py::arg("element"))
-      .def("element_type", &TensorType::element)
-      .def(py::pickle(
-        [](const TensorType &t) {  // __getstate__
-          /* Return a tuple that fully encodes the state of the object */
-          return py::make_tuple(py::int_(static_cast<int>(t.element()->type_id())));
-        },
-        [](const py::tuple &t) {  // __setstate__
-          if (t.size() != 1) {
-            throw std::runtime_error("Invalid state!");
-          }
-          /* Create a new C++ instance */
-          TensorType data(TypeIdToType(TypeId(static_cast<int>(t[0].cast<py::int_>()))));
-          return data;
-        }));
-    (void)py::class_<IndexedSlicesType, Type, std::shared_ptr<IndexedSlicesType>>(m_sub, "IndexedSlicesType")
-      .def(py::init());
-    (void)py::class_<UndeterminedType, Type, std::shared_ptr<UndeterminedType>>(m_sub, "UndeterminedType")
-      .def(py::init());
-    (void)py::class_<Function, Type, std::shared_ptr<Function>>(m_sub, "Function")
-      .def(py::init())
-      .def(py::init<std::vector<TypePtr>, TypePtr>(), py::arg("args"), py::arg("retval"));
-    (void)py::class_<Class, Type, std::shared_ptr<Class>>(m_sub, "Class").def(py::init());
-    (void)py::class_<SymbolicKeyType, Type, std::shared_ptr<SymbolicKeyType>>(m_sub, "SymbolicKeyType").def(py::init());
-    (void)py::class_<EnvType, Type, std::shared_ptr<EnvType>>(m_sub, "EnvType").def(py::init());
-    (void)py::class_<TypeNone, Type, std::shared_ptr<TypeNone>>(m_sub, "TypeNone").def(py::init());
-    (void)py::class_<TypeType, Type, std::shared_ptr<TypeType>>(m_sub, "TypeType").def(py::init());
-    (void)py::class_<String, Type, std::shared_ptr<String>>(m_sub, "String").def(py::init());
-    (void)py::class_<RefKeyType, Type, std::shared_ptr<RefKeyType>>(m_sub, "RefKeyType").def(py::init());
-    (void)py::class_<RefType, Type, std::shared_ptr<RefType>>(m_sub, "RefType").def(py::init());
-    (void)py::class_<TypeAnything, Type, std::shared_ptr<TypeAnything>>(m_sub, "TypeAnything").def(py::init());
-    (void)py::class_<Slice, Type, std::shared_ptr<Slice>>(m_sub, "Slice").def(py::init());
-    (void)py::class_<TypeEllipsis, Type, std::shared_ptr<TypeEllipsis>>(m_sub, "TypeEllipsis").def(py::init());
-  }));
-
 const TypePtr kTypeExternal = std::make_shared<External>();
 const TypePtr kTypeEnv = std::make_shared<EnvType>();
 const TypePtr kTypeType = std::make_shared<TypeType>();
diff --git a/mindspore/ccsrc/ir/dtype_py.cc b/mindspore/ccsrc/ir/dtype_py.cc
new file mode 100644
index 0000000000..c8b34a48e9
--- /dev/null
+++ b/mindspore/ccsrc/ir/dtype_py.cc
@@ -0,0 +1,155 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ir/dtype.h"
+#include <string>
+#include <cstdlib>
+#include <algorithm>
+#include "utils/log_adapter.h"
+#include "pipeline/static_analysis/abstract_value.h"
+#include "pybind_api/api_register.h"
+#include "pybind_api/export_flags.h"
+
+namespace mindspore {
+// Define python wrapper to handle data types.
+REGISTER_PYBIND_DEFINE(
+  typing, ([](py::module *const m) {
+    auto m_sub = m->def_submodule("typing", "submodule for dtype");
+    py::enum_<TypeId>(m_sub, "TypeId");
+    (void)m_sub.def("is_subclass", &IsIdentidityOrSubclass, "is equal or subclass");
+    (void)m_sub.def("load_type", &TypeIdToType, "load type");
+    (void)m_sub.def(
+      "dump_type", [](const TypePtr &t) { return t->type_id(); }, "dump type");
+    (void)m_sub.def("str_to_type", &StringToType, "string to typeptr");
+    (void)py::class_<Type, std::shared_ptr<Type>>(m_sub, "Type")
+      .def_readonly(PYTHON_DTYPE_FLAG, &mindspore::Type::parse_info_)
+      .def("__eq__",
+           [](const TypePtr &t1, const TypePtr &t2) {
+             if (t1 != nullptr && t2 != nullptr) {
+               return *t1 == *t2;
+             }
+             return false;
+           })
+      .def("__hash__", &Type::hash)
+      .def("__str__", &Type::ToString)
+      .def("__repr__", &Type::ReprString)
+      .def("__deepcopy__", [](const TypePtr &t, py::dict) {
+        if (t == nullptr) {
+          return static_cast<TypePtr>(nullptr);
+        }
+        return t->DeepCopy();
+      });
+    (void)py::class_<Number, Type, std::shared_ptr<Number>>(m_sub, "Number").def(py::init());
+    (void)py::class_<Bool, Type, std::shared_ptr<Bool>>(m_sub, "Bool")
+      .def(py::init())
+      .def(py::pickle(
+        [](const Bool &) {  // __getstate__
+          return py::make_tuple();
+        },
+        [](const py::tuple &) {  // __setstate__
+          return std::make_shared<Bool>();
+        }));
+    (void)py::class_<Int, Type, std::shared_ptr<Int>>(m_sub, "Int")
+      .def(py::init())
+      .def(py::init<int>(), py::arg("nbits"))
+      .def(py::pickle(
+        [](const Int &t) {  // __getstate__
+          /* Return a tuple that fully encodes the state of the object */
+          return py::make_tuple(py::int_(t.nbits()));
+        },
+        [](const py::tuple &t) {  // __setstate__
+          if (t.size() != 1) {
+            throw std::runtime_error("Invalid state!");
+          }
+          /* Create a new C++ instance */
+          Int data(t[0].cast<py::int_>());
+          return data;
+        }));
+    (void)py::class_<UInt, Type, std::shared_ptr<UInt>>(m_sub, "UInt")
+      .def(py::init())
+      .def(py::init<int>(), py::arg("nbits"))
+      .def(py::pickle(
+        [](const UInt &t) {  // __getstate__
+          /* Return a tuple that fully encodes the state of the object */
+          return py::make_tuple(py::int_(t.nbits()));
+        },
+        [](const py::tuple &t) {  // __setstate__
+          if (t.size() != 1) {
+            throw std::runtime_error("Invalid state!");
+          }
+          /* Create a new C++ instance */
+          UInt data(t[0].cast<py::int_>());
+          return data;
+        }));
+    (void)py::class_<Float, Type, std::shared_ptr<Float>>(m_sub, "Float")
+      .def(py::init())
+      .def(py::init<int>(), py::arg("nbits"))
+      .def(py::pickle(
+        [](const Float &t) {  // __getstate__
+          /* Return a tuple that fully encodes the state of the object */
+          return py::make_tuple(py::int_(t.nbits()));
+        },
+        [](const py::tuple &t) {  // __setstate__
+          if (t.size() != 1) {
+            throw std::runtime_error("Invalid state!");
+          }
+          /* Create a new C++ instance */
+          Float data(t[0].cast<py::int_>());
+          return data;
+        }));
+    (void)py::class_<List, Type, std::shared_ptr<List>>(m_sub, "List")
+      .def(py::init())
+      .def(py::init<std::vector<TypePtr>>(), py::arg("elements"));
+    (void)py::class_<Tuple, Type, std::shared_ptr<Tuple>>(m_sub, "Tuple")
+      .def(py::init())
+      .def(py::init<std::vector<TypePtr>>(), py::arg("elements"));
+    (void)py::class_<TensorType, Type, std::shared_ptr<TensorType>>(m_sub, "TensorType")
+      .def(py::init())
+      .def(py::init<TypePtr>(), py::arg("element"))
+      .def("element_type", &TensorType::element)
+      .def(py::pickle(
+        [](const TensorType &t) {  // __getstate__
+          /* Return a tuple that fully encodes the state of the object */
+          return py::make_tuple(py::int_(static_cast<int>(t.element()->type_id())));
+        },
+        [](const py::tuple &t) {  // __setstate__
+          if (t.size() != 1) {
+            throw std::runtime_error("Invalid state!");
+          }
+          /* Create a new C++ instance */
+          TensorType data(TypeIdToType(TypeId(static_cast<int>(t[0].cast<py::int_>()))));
+          return data;
+        }));
+    (void)py::class_<IndexedSlicesType, Type, std::shared_ptr<IndexedSlicesType>>(m_sub, "IndexedSlicesType")
+      .def(py::init());
+    (void)py::class_<UndeterminedType, Type, std::shared_ptr<UndeterminedType>>(m_sub, "UndeterminedType")
+      .def(py::init());
+    (void)py::class_<Function, Type, std::shared_ptr<Function>>(m_sub, "Function")
+      .def(py::init())
+      .def(py::init<std::vector<TypePtr>, TypePtr>(), py::arg("args"), py::arg("retval"));
+    (void)py::class_<Class, Type, std::shared_ptr<Class>>(m_sub, "Class").def(py::init());
+    (void)py::class_<SymbolicKeyType, Type, std::shared_ptr<SymbolicKeyType>>(m_sub, "SymbolicKeyType").def(py::init());
+    (void)py::class_<EnvType, Type, std::shared_ptr<EnvType>>(m_sub, "EnvType").def(py::init());
+    (void)py::class_<TypeNone, Type, std::shared_ptr<TypeNone>>(m_sub, "TypeNone").def(py::init());
+    (void)py::class_<TypeType, Type, std::shared_ptr<TypeType>>(m_sub, "TypeType").def(py::init());
+    (void)py::class_<String, Type, std::shared_ptr<String>>(m_sub, "String").def(py::init());
+    (void)py::class_<RefKeyType, Type, std::shared_ptr<RefKeyType>>(m_sub, "RefKeyType").def(py::init());
+    (void)py::class_<RefType, Type, std::shared_ptr<RefType>>(m_sub, "RefType").def(py::init());
+    (void)py::class_<TypeAnything, Type, std::shared_ptr<TypeAnything>>(m_sub, "TypeAnything").def(py::init());
+    (void)py::class_<Slice, Type, std::shared_ptr<Slice>>(m_sub, "Slice").def(py::init());
+    (void)py::class_<TypeEllipsis, Type, std::shared_ptr<TypeEllipsis>>(m_sub, "TypeEllipsis").def(py::init());
+  }));
+}  // namespace mindspore
diff --git a/mindspore/ccsrc/ir/func_graph.cc b/mindspore/ccsrc/ir/func_graph.cc
index d7a6eb81f7..b0d0910304 100644
--- a/mindspore/ccsrc/ir/func_graph.cc
+++ b/mindspore/ccsrc/ir/func_graph.cc
@@ -25,7 +25,6 @@
 #include "debug/trace.h"
 #include "ir/manager.h"
 #include "operator/ops.h"
-#include "pybind_api/export_flags.h"
 #include "utils/ordered_set.h"
 #include "utils/convert_utils_base.h"
 
diff --git a/mindspore/ccsrc/ir/meta_func_graph.h b/mindspore/ccsrc/ir/meta_func_graph.h
index f63f812f9e..8b43bafe7f 100644
--- a/mindspore/ccsrc/ir/meta_func_graph.h
+++ b/mindspore/ccsrc/ir/meta_func_graph.h
@@ -26,16 +26,12 @@
 #include <vector>
 #include <algorithm>
 
-#include "pybind11/pybind11.h"
-
 #include "ir/dtype.h"
 #include "ir/anf.h"
 #include "ir/func_graph.h"
 #include "ir/signature.h"
 #include "pipeline/static_analysis/abstract_value.h"
 
-namespace py = pybind11;
-
 namespace mindspore {
 // namespace to support intermediate representation definition
 // Graph generator.
diff --git a/mindspore/ccsrc/ir/value_extends.cc b/mindspore/ccsrc/ir/value_extends.cc
index 8eb34d0eeb..f5f9bb8f28 100644
--- a/mindspore/ccsrc/ir/value_extends.cc
+++ b/mindspore/ccsrc/ir/value_extends.cc
@@ -20,7 +20,6 @@
 #include <cmath>
 #include <cfloat>
 
-#include "pybind_api/api_register.h"
 #include "pipeline/static_analysis/abstract_value.h"
 
 namespace mindspore {
@@ -83,9 +82,4 @@ abstract::AbstractBasePtr ValueDictionary::ToAbstract() {
     [](const std::pair<std::string, ValuePtr> &item) { return std::make_pair(item.first, item.second->ToAbstract()); });
   return std::make_shared<abstract::AbstractDictionary>(kv);
 }
-
-REGISTER_PYBIND_DEFINE(
-  RefKey, ([](const py::module *m) {
-    (void)py::class_<RefKey, std::shared_ptr<RefKey>>(*m, "RefKey").def(py::init<std::string>(), py::arg("tag"));
-  }));
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/ir/value_py.cc b/mindspore/ccsrc/ir/value_py.cc
new file mode 100644
index 0000000000..7207cd06d6
--- /dev/null
+++ b/mindspore/ccsrc/ir/value_py.cc
@@ -0,0 +1,29 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ir/value.h"
+#include <string>
+
+#include "pybind_api/api_register.h"
+#include "pipeline/static_analysis/abstract_value.h"
+
+namespace mindspore {
+// Define python 'RefKey' class.
+REGISTER_PYBIND_DEFINE(
+  RefKey, ([](const py::module *m) {
+    (void)py::class_<RefKey, std::shared_ptr<RefKey>>(*m, "RefKey").def(py::init<std::string>(), py::arg("tag"));
+  }));
+}  // namespace mindspore