restructuring

mindspore/ccsrc/minddata/dataset/api/CMakeLists.txt

 file(GLOB_RECURSE _CURRENT_SRC_FILES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "*.cc")
 set_property(SOURCE ${_CURRENT_SRC_FILES} PROPERTY COMPILE_DEFINITIONS SUBMODULE_ID=mindspore::SubModuleId::SM_MD)
 if (ENABLE_PYTHON)
-  add_library(APItoPython OBJECT
-    de_pipeline.cc
-    python_bindings.cc
-    )
-  target_include_directories(APItoPython PRIVATE ${pybind11_INCLUDE_DIRS})
-endif()
+    add_library(APItoPython OBJECT
+            python/de_pipeline.cc
+            python/pybind_register.cc
+            python/bindings.cc
+            python/bindings/dataset/engine/cache/bindings.cc
+            python/bindings/dataset/core/bindings.cc
+            python/bindings/dataset/kernels/data/bindings.cc
+            python/bindings/dataset/kernels/bindings.cc
+            python/bindings/dataset/engine/datasetops/bindings.cc
+            python/bindings/dataset/engine/datasetops/source/bindings.cc
+            python/bindings/dataset/engine/gnn/bindings.cc
+            python/bindings/dataset/kernels/image/bindings.cc
+            python/bindings/dataset/engine/datasetops/source/sampler/bindings.cc
+            python/bindings/dataset/text/bindings.cc
+            python/bindings/dataset/text/kernels/bindings.cc
+            python/bindings/mindrecord/include/bindings.cc
+            )
+    target_include_directories(APItoPython PRIVATE ${pybind11_INCLUDE_DIRS})
+endif ()
 
 add_library(cpp-API OBJECT
-  datasets.cc
-  iterator.cc
-  transforms.cc
-  samplers.cc
-  )
+        datasets.cc
+        iterator.cc
+        transforms.cc
+        samplers.cc
+        )

mindspore/ccsrc/minddata/dataset/api/python/bindings.cc

+/**
+ * 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 "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+#include "pybind11/stl_bind.h"
+
+#include "minddata/dataset/api/python/pybind_register.h"
+#include "minddata/dataset/api/python/de_pipeline.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(
+  DEPipeline, 0, ([](const py::module *m) {
+    (void)py::class_<DEPipeline>(*m, "DEPipeline")
+      .def(py::init<>())
+      .def(
+        "AddNodeToTree",
+        [](DEPipeline &de, const OpName &op_name, const py::dict &args) {
+          py::dict out;
+          THROW_IF_ERROR(de.AddNodeToTree(op_name, args, &out));
+          return out;
+        },
+        py::return_value_policy::reference)
+      .def_static("AddChildToParentNode",
+                  [](const DsOpPtr &child_op, const DsOpPtr &parent_op) {
+                    THROW_IF_ERROR(DEPipeline::AddChildToParentNode(child_op, parent_op));
+                  })
+      .def("AssignRootNode",
+           [](DEPipeline &de, const DsOpPtr &dataset_op) { THROW_IF_ERROR(de.AssignRootNode(dataset_op)); })
+      .def("SetBatchParameters",
+           [](DEPipeline &de, const py::dict &args) { THROW_IF_ERROR(de.SetBatchParameters(args)); })
+      .def("LaunchTreeExec", [](DEPipeline &de, int32_t num_epochs) { THROW_IF_ERROR(de.LaunchTreeExec(num_epochs)); })
+      .def("GetNextAsMap",
+           [](DEPipeline &de) {
+             py::dict out;
+             THROW_IF_ERROR(de.GetNextAsMap(&out));
+             return out;
+           })
+      .def("GetNextAsList",
+           [](DEPipeline &de) {
+             py::list out;
+             THROW_IF_ERROR(de.GetNextAsList(&out));
+             return out;
+           })
+      .def("GetOutputShapes",
+           [](DEPipeline &de) {
+             py::list out;
+             THROW_IF_ERROR(de.GetOutputShapes(&out));
+             return out;
+           })
+      .def("GetOutputTypes",
+           [](DEPipeline &de) {
+             py::list out;
+             THROW_IF_ERROR(de.GetOutputTypes(&out));
+             return out;
+           })
+      .def("GetDatasetSize", &DEPipeline::GetDatasetSize)
+      .def("GetBatchSize", &DEPipeline::GetBatchSize)
+      .def("GetNumClasses", &DEPipeline::GetNumClasses)
+      .def("GetRepeatCount", &DEPipeline::GetRepeatCount)
+      .def("StopSend", [](DEPipeline &de) { THROW_IF_ERROR(de.StopSend()); })
+      .def("SaveDataset", [](DEPipeline &de, const std::vector<std::string> &file_names, const std::string &file_type) {
+        THROW_IF_ERROR(de.SaveDataset(file_names, file_type));
+        return true;
+      });
+  }));
+
+PYBIND_REGISTER(OpName, 0, ([](const py::module *m) {
+                  (void)py::enum_<OpName>(*m, "OpName", py::arithmetic())
+                    .value("SHUFFLE", OpName::kShuffle)
+                    .value("BATCH", OpName::kBatch)
+                    .value("BUCKETBATCH", OpName::kBucketBatch)
+                    .value("BARRIER", OpName::kBarrier)
+                    .value("MINDRECORD", OpName::kMindrecord)
+                    .value("CACHE", OpName::kCache)
+                    .value("REPEAT", OpName::kRepeat)
+                    .value("SKIP", OpName::kSkip)
+                    .value("TAKE", OpName::kTake)
+                    .value("ZIP", OpName::kZip)
+                    .value("CONCAT", OpName::kConcat)
+                    .value("MAP", OpName::kMap)
+                    .value("FILTER", OpName::kFilter)
+                    .value("DEVICEQUEUE", OpName::kDeviceQueue)
+                    .value("GENERATOR", OpName::kGenerator)
+                    .export_values()
+                    .value("RENAME", OpName::kRename)
+                    .value("TFREADER", OpName::kTfReader)
+                    .value("PROJECT", OpName::kProject)
+                    .value("IMAGEFOLDER", OpName::kImageFolder)
+                    .value("MNIST", OpName::kMnist)
+                    .value("MANIFEST", OpName::kManifest)
+                    .value("VOC", OpName::kVoc)
+                    .value("COCO", OpName::kCoco)
+                    .value("CIFAR10", OpName::kCifar10)
+                    .value("CIFAR100", OpName::kCifar100)
+                    .value("RANDOMDATA", OpName::kRandomData)
+                    .value("BUILDVOCAB", OpName::kBuildVocab)
+                    .value("SENTENCEPIECEVOCAB", OpName::kSentencePieceVocab)
+                    .value("CELEBA", OpName::kCelebA)
+                    .value("TEXTFILE", OpName::kTextFile)
+                    .value("EPOCHCTRL", OpName::kEpochCtrl)
+                    .value("CSV", OpName::kCsv)
+                    .value("CLUE", OpName::kClue);
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/core/bindings.cc

+/**
+ * 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 "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+#include "pybind11/stl_bind.h"
+
+#include "minddata/dataset/api/python/pybind_register.h"
+#include "minddata/dataset/core/global_context.h"
+#include "minddata/dataset/core/constants.h"
+#include "minddata/dataset/api/python/de_pipeline.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(GlobalContext, 0, ([](const py::module *m) {
+                  (void)py::class_<GlobalContext>(*m, "GlobalContext")
+                    .def_static("config_manager", &GlobalContext::config_manager, py::return_value_policy::reference);
+                }));
+
+PYBIND_REGISTER(ConfigManager, 0, ([](const py::module *m) {
+                  (void)py::class_<ConfigManager, std::shared_ptr<ConfigManager>>(*m, "ConfigManager")
+                    .def("__str__", &ConfigManager::ToString)
+                    .def("set_rows_per_buffer", &ConfigManager::set_rows_per_buffer)
+                    .def("set_num_parallel_workers", &ConfigManager::set_num_parallel_workers)
+                    .def("set_worker_connector_size", &ConfigManager::set_worker_connector_size)
+                    .def("set_op_connector_size", &ConfigManager::set_op_connector_size)
+                    .def("set_seed", &ConfigManager::set_seed)
+                    .def("set_monitor_sampling_interval", &ConfigManager::set_monitor_sampling_interval)
+                    .def("get_rows_per_buffer", &ConfigManager::rows_per_buffer)
+                    .def("get_num_parallel_workers", &ConfigManager::num_parallel_workers)
+                    .def("get_worker_connector_size", &ConfigManager::worker_connector_size)
+                    .def("get_op_connector_size", &ConfigManager::op_connector_size)
+                    .def("get_seed", &ConfigManager::seed)
+                    .def("get_monitor_sampling_interval", &ConfigManager::monitor_sampling_interval)
+                    .def("load", [](ConfigManager &c, std::string s) { THROW_IF_ERROR(c.LoadFile(s)); });
+                }));
+
+PYBIND_REGISTER(Tensor, 0, ([](const py::module *m) {
+                  (void)py::class_<Tensor, std::shared_ptr<Tensor>>(*m, "Tensor", py::buffer_protocol())
+                    .def(py::init([](py::array arr) {
+                      std::shared_ptr<Tensor> out;
+                      THROW_IF_ERROR(Tensor::CreateFromNpArray(arr, &out));
+                      return out;
+                    }))
+                    .def_buffer([](Tensor &tensor) {
+                      py::buffer_info info;
+                      THROW_IF_ERROR(Tensor::GetBufferInfo(&tensor, &info));
+                      return info;
+                    })
+                    .def("__str__", &Tensor::ToString)
+                    .def("shape", &Tensor::shape)
+                    .def("type", &Tensor::type)
+                    .def("as_array", [](py::object &t) {
+                      auto &tensor = py::cast<Tensor &>(t);
+                      if (tensor.type() == DataType::DE_STRING) {
+                        py::array res;
+                        tensor.GetDataAsNumpyStrings(&res);
+                        return res;
+                      }
+                      py::buffer_info info;
+                      THROW_IF_ERROR(Tensor::GetBufferInfo(&tensor, &info));
+                      return py::array(pybind11::dtype(info), info.shape, info.strides, info.ptr, t);
+                    });
+                }));
+
+PYBIND_REGISTER(TensorShape, 0, ([](const py::module *m) {
+                  (void)py::class_<TensorShape>(*m, "TensorShape")
+                    .def(py::init<py::list>())
+                    .def("__str__", &TensorShape::ToString)
+                    .def("as_list", &TensorShape::AsPyList)
+                    .def("is_known", &TensorShape::known);
+                }));
+
+PYBIND_REGISTER(DataType, 0, ([](const py::module *m) {
+                  (void)py::class_<DataType>(*m, "DataType")
+                    .def(py::init<std::string>())
+                    .def(py::self == py::self)
+                    .def("__str__", &DataType::ToString)
+                    .def("__deepcopy__", [](py::object &t, py::dict memo) { return t; });
+                }));
+
+PYBIND_REGISTER(BorderType, 0, ([](const py::module *m) {
+                  (void)py::enum_<BorderType>(*m, "BorderType", py::arithmetic())
+                    .value("DE_BORDER_CONSTANT", BorderType::kConstant)
+                    .value("DE_BORDER_EDGE", BorderType::kEdge)
+                    .value("DE_BORDER_REFLECT", BorderType::kReflect)
+                    .value("DE_BORDER_SYMMETRIC", BorderType::kSymmetric)
+                    .export_values();
+                }));
+
+PYBIND_REGISTER(InterpolationMode, 0, ([](const py::module *m) {
+                  (void)py::enum_<InterpolationMode>(*m, "InterpolationMode", py::arithmetic())
+                    .value("DE_INTER_LINEAR", InterpolationMode::kLinear)
+                    .value("DE_INTER_CUBIC", InterpolationMode::kCubic)
+                    .value("DE_INTER_AREA", InterpolationMode::kArea)
+                    .value("DE_INTER_NEAREST_NEIGHBOUR", InterpolationMode::kNearestNeighbour)
+                    .export_values();
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/engine/cache/bindings.cc

+/**
+ * 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 "minddata/dataset/api/python/pybind_register.h"
+#include "minddata/dataset/engine/cache/cache_client.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(CacheClient, 0, ([](const py::module *m) {
+                  (void)py::class_<CacheClient, std::shared_ptr<CacheClient>>(*m, "CacheClient")
+                    .def(py::init<uint32_t, uint64_t, bool>());
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/engine/datasetops/bindings.cc

+/**
+ * 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 "minddata/dataset/api/python/pybind_register.h"
+#include "minddata/dataset/engine/datasetops/batch_op.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(CBatchInfo, 0, ([](const py::module *m) {
+                  (void)py::class_<BatchOp::CBatchInfo>(*m, "CBatchInfo")
+                    .def(py::init<int64_t, int64_t, int64_t>())
+                    .def("get_epoch_num", &BatchOp::CBatchInfo::get_epoch_num)
+                    .def("get_batch_num", &BatchOp::CBatchInfo::get_batch_num);
+                }));
+
+PYBIND_REGISTER(DatasetOp, 0, ([](const py::module *m) {
+                  (void)py::class_<DatasetOp, std::shared_ptr<DatasetOp>>(*m, "DatasetOp");
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/engine/datasetops/source/bindings.cc

+/**
+ * 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 "minddata/dataset/api/python/pybind_register.h"
+
+#include "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+#include "pybind11/stl_bind.h"
+
+#include "minddata/dataset/engine/datasetops/dataset_op.h"
+
+#include "minddata/dataset/engine/datasetops/source/cifar_op.h"
+#include "minddata/dataset/engine/datasetops/source/clue_op.h"
+#include "minddata/dataset/engine/datasetops/source/csv_op.h"
+#include "minddata/dataset/engine/datasetops/source/coco_op.h"
+#include "minddata/dataset/engine/datasetops/source/image_folder_op.h"
+#include "minddata/dataset/engine/datasetops/source/io_block.h"
+#include "minddata/dataset/engine/datasetops/source/manifest_op.h"
+#include "minddata/dataset/engine/datasetops/source/mindrecord_op.h"
+#include "minddata/dataset/engine/datasetops/source/mnist_op.h"
+#include "minddata/dataset/engine/datasetops/source/random_data_op.h"
+#include "minddata/dataset/engine/datasetops/source/text_file_op.h"
+#include "minddata/dataset/engine/datasetops/source/tf_reader_op.h"
+#include "minddata/dataset/engine/datasetops/source/voc_op.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(CifarOp, 1, ([](const py::module *m) {
+                  (void)py::class_<CifarOp, DatasetOp, std::shared_ptr<CifarOp>>(*m, "CifarOp")
+                    .def_static("get_num_rows", [](const std::string &dir, bool isCifar10) {
+                      int64_t count = 0;
+                      THROW_IF_ERROR(CifarOp::CountTotalRows(dir, isCifar10, &count));
+                      return count;
+                    });
+                }));
+
+PYBIND_REGISTER(ClueOp, 1, ([](const py::module *m) {
+                  (void)py::class_<ClueOp, DatasetOp, std::shared_ptr<ClueOp>>(*m, "ClueOp")
+                    .def_static("get_num_rows", [](const py::list &files) {
+                      int64_t count = 0;
+                      std::vector<std::string> filenames;
+                      for (auto file : files) {
+                        file.is_none() ? (void)filenames.emplace_back("") : filenames.push_back(py::str(file));
+                      }
+                      THROW_IF_ERROR(ClueOp::CountAllFileRows(filenames, &count));
+                      return count;
+                    });
+                }));
+
+PYBIND_REGISTER(CsvOp, 1, ([](const py::module *m) {
+                  (void)py::class_<CsvOp, DatasetOp, std::shared_ptr<CsvOp>>(*m, "CsvOp")
+                    .def_static("get_num_rows", [](const py::list &files, bool csv_header) {
+                      int64_t count = 0;
+                      std::vector<std::string> filenames;
+                      for (auto file : files) {
+                        file.is_none() ? (void)filenames.emplace_back("") : filenames.push_back(py::str(file));
+                      }
+                      THROW_IF_ERROR(CsvOp::CountAllFileRows(filenames, csv_header, &count));
+                      return count;
+                    });
+                }));
+PYBIND_REGISTER(CocoOp, 1, ([](const py::module *m) {
+                  (void)py::class_<CocoOp, DatasetOp, std::shared_ptr<CocoOp>>(*m, "CocoOp")
+                    .def_static("get_class_indexing",
+                                [](const std::string &dir, const std::string &file, const std::string &task) {
+                                  std::vector<std::pair<std::string, std::vector<int32_t>>> output_class_indexing;
+                                  THROW_IF_ERROR(CocoOp::GetClassIndexing(dir, file, task, &output_class_indexing));
+                                  return output_class_indexing;
+                                })
+                    .def_static("get_num_rows",
+                                [](const std::string &dir, const std::string &file, const std::string &task) {
+                                  int64_t count = 0;
+                                  THROW_IF_ERROR(CocoOp::CountTotalRows(dir, file, task, &count));
+                                  return count;
+                                });
+                }));
+
+PYBIND_REGISTER(ImageFolderOp, 1, ([](const py::module *m) {
+                  (void)py::class_<ImageFolderOp, DatasetOp, std::shared_ptr<ImageFolderOp>>(*m, "ImageFolderOp")
+                    .def_static("get_num_rows_and_classes", [](const std::string &path) {
+                      int64_t count = 0, num_classes = 0;
+                      THROW_IF_ERROR(
+                        ImageFolderOp::CountRowsAndClasses(path, std::set<std::string>{}, &count, &num_classes));
+                      return py::make_tuple(count, num_classes);
+                    });
+                }));
+
+PYBIND_REGISTER(ManifestOp, 1, ([](const py::module *m) {
+                  (void)py::class_<ManifestOp, DatasetOp, std::shared_ptr<ManifestOp>>(*m, "ManifestOp")
+                    .def_static("get_num_rows_and_classes",
+                                [](const std::string &file, const py::dict &dict, const std::string &usage) {
+                                  int64_t count = 0, num_classes = 0;
+                                  THROW_IF_ERROR(ManifestOp::CountTotalRows(file, dict, usage, &count, &num_classes));
+                                  return py::make_tuple(count, num_classes);
+                                })
+                    .def_static("get_class_indexing", [](const std::string &file, const py::dict &dict,
+                                                         const std::string &usage) {
+                      std::map<std::string, int32_t> output_class_indexing;
+                      THROW_IF_ERROR(ManifestOp::GetClassIndexing(file, dict, usage, &output_class_indexing));
+                      return output_class_indexing;
+                    });
+                }));
+PYBIND_REGISTER(MindRecordOp, 1, ([](const py::module *m) {
+                  (void)py::class_<MindRecordOp, DatasetOp, std::shared_ptr<MindRecordOp>>(*m, "MindRecordOp")
+                    .def_static("get_num_rows", [](const std::vector<std::string> &paths, bool load_dataset,
+                                                   const py::object &sampler, const int64_t num_padded) {
+                      int64_t count = 0;
+                      std::shared_ptr<mindrecord::ShardOperator> op;
+                      if (py::hasattr(sampler, "create_for_minddataset")) {
+                        auto create = sampler.attr("create_for_minddataset");
+                        op = create().cast<std::shared_ptr<mindrecord::ShardOperator>>();
+                      }
+                      THROW_IF_ERROR(MindRecordOp::CountTotalRows(paths, load_dataset, op, &count, num_padded));
+                      return count;
+                    });
+                }));
+
+PYBIND_REGISTER(MnistOp, 1, ([](const py::module *m) {
+                  (void)py::class_<MnistOp, DatasetOp, std::shared_ptr<MnistOp>>(*m, "MnistOp")
+                    .def_static("get_num_rows", [](const std::string &dir) {
+                      int64_t count = 0;
+                      THROW_IF_ERROR(MnistOp::CountTotalRows(dir, &count));
+                      return count;
+                    });
+                }));
+
+PYBIND_REGISTER(TextFileOp, 1, ([](const py::module *m) {
+                  (void)py::class_<TextFileOp, DatasetOp, std::shared_ptr<TextFileOp>>(*m, "TextFileOp")
+                    .def_static("get_num_rows", [](const py::list &files) {
+                      int64_t count = 0;
+                      std::vector<std::string> filenames;
+                      for (auto file : files) {
+                        !file.is_none() ? filenames.push_back(py::str(file)) : (void)filenames.emplace_back("");
+                      }
+                      THROW_IF_ERROR(TextFileOp::CountAllFileRows(filenames, &count));
+                      return count;
+                    });
+                }));
+
+PYBIND_REGISTER(TFReaderOp, 1, ([](const py::module *m) {
+                  (void)py::class_<TFReaderOp, DatasetOp, std::shared_ptr<TFReaderOp>>(*m, "TFReaderOp")
+                    .def_static(
+                      "get_num_rows", [](const py::list &files, int64_t numParallelWorkers, bool estimate = false) {
+                        int64_t count = 0;
+                        std::vector<std::string> filenames;
+                        for (auto l : files) {
+                          !l.is_none() ? filenames.push_back(py::str(l)) : (void)filenames.emplace_back("");
+                        }
+                        THROW_IF_ERROR(TFReaderOp::CountTotalRows(&count, filenames, numParallelWorkers, estimate));
+                        return count;
+                      });
+                }));
+
+PYBIND_REGISTER(VOCOp, 1, ([](const py::module *m) {
+                  (void)py::class_<VOCOp, DatasetOp, std::shared_ptr<VOCOp>>(*m, "VOCOp")
+                    .def_static("get_num_rows",
+                                [](const std::string &dir, const std::string &task_type, const std::string &task_mode,
+                                   const py::dict &dict, int64_t numSamples) {
+                                  int64_t count = 0;
+                                  THROW_IF_ERROR(VOCOp::CountTotalRows(dir, task_type, task_mode, dict, &count));
+                                  return count;
+                                })
+                    .def_static("get_class_indexing", [](const std::string &dir, const std::string &task_type,
+                                                         const std::string &task_mode, const py::dict &dict) {
+                      std::map<std::string, int32_t> output_class_indexing;
+                      THROW_IF_ERROR(VOCOp::GetClassIndexing(dir, task_type, task_mode, dict, &output_class_indexing));
+                      return output_class_indexing;
+                    });
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/engine/datasetops/source/sampler/bindings.cc

+/**
+ * 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 "minddata/dataset/api/python/pybind_register.h"
+#include "minddata/dataset/engine/datasetops/source/sampler/sampler.h"
+#include "minddata/dataset/engine/datasetops/source/sampler/distributed_sampler.h"
+#include "minddata/dataset/engine/datasetops/source/sampler/pk_sampler.h"
+#include "minddata/dataset/engine/datasetops/source/sampler/python_sampler.h"
+#include "minddata/dataset/engine/datasetops/source/sampler/random_sampler.h"
+#include "minddata/dataset/engine/datasetops/source/sampler/sequential_sampler.h"
+#include "minddata/dataset/engine/datasetops/source/sampler/subset_random_sampler.h"
+#include "minddata/dataset/engine/datasetops/source/sampler/weighted_random_sampler.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(Sampler, 0, ([](const py::module *m) {
+                  (void)py::class_<Sampler, std::shared_ptr<Sampler>>(*m, "Sampler")
+                    .def("set_num_rows",
+                         [](Sampler &self, int64_t rows) { THROW_IF_ERROR(self.SetNumRowsInDataset(rows)); })
+                    .def("set_num_samples",
+                         [](Sampler &self, int64_t samples) { THROW_IF_ERROR(self.SetNumSamples(samples)); })
+                    .def("initialize", [](Sampler &self) { THROW_IF_ERROR(self.InitSampler()); })
+                    .def("get_indices",
+                         [](Sampler &self) {
+                           py::array ret;
+                           THROW_IF_ERROR(self.GetAllIdsThenReset(&ret));
+                           return ret;
+                         })
+                    .def("add_child", [](std::shared_ptr<Sampler> self, std::shared_ptr<Sampler> child) {
+                      THROW_IF_ERROR(self->AddChild(child));
+                    });
+                }));
+
+PYBIND_REGISTER(DistributedSampler, 1, ([](const py::module *m) {
+                  (void)py::class_<DistributedSampler, Sampler, std::shared_ptr<DistributedSampler>>(
+                    *m, "DistributedSampler")
+                    .def(py::init<int64_t, int64_t, int64_t, bool, uint32_t>());
+                }));
+
+PYBIND_REGISTER(PKSampler, 1, ([](const py::module *m) {
+                  (void)py::class_<PKSampler, Sampler, std::shared_ptr<PKSampler>>(*m, "PKSampler")
+                    .def(py::init<int64_t, int64_t, bool>());
+                }));
+
+PYBIND_REGISTER(PythonSampler, 1, ([](const py::module *m) {
+                  (void)py::class_<PythonSampler, Sampler, std::shared_ptr<PythonSampler>>(*m, "PythonSampler")
+                    .def(py::init<int64_t, py::object>());
+                }));
+
+PYBIND_REGISTER(RandomSampler, 1, ([](const py::module *m) {
+                  (void)py::class_<RandomSampler, Sampler, std::shared_ptr<RandomSampler>>(*m, "RandomSampler")
+                    .def(py::init<int64_t, bool, bool>());
+                }));
+
+PYBIND_REGISTER(SequentialSampler, 1, ([](const py::module *m) {
+                  (void)py::class_<SequentialSampler, Sampler, std::shared_ptr<SequentialSampler>>(*m,
+                                                                                                   "SequentialSampler")
+                    .def(py::init<int64_t, int64_t>());
+                }));
+
+PYBIND_REGISTER(SubsetRandomSampler, 1, ([](const py::module *m) {
+                  (void)py::class_<SubsetRandomSampler, Sampler, std::shared_ptr<SubsetRandomSampler>>(
+                    *m, "SubsetRandomSampler")
+                    .def(py::init<int64_t, std::vector<int64_t>>());
+                }));
+
+PYBIND_REGISTER(WeightedRandomSampler, 1, ([](const py::module *m) {
+                  (void)py::class_<WeightedRandomSampler, Sampler, std::shared_ptr<WeightedRandomSampler>>(
+                    *m, "WeightedRandomSampler")
+                    .def(py::init<int64_t, std::vector<double>, bool>());
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/engine/gnn/bindings.cc

+/**
+ * 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 "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+#include "pybind11/stl_bind.h"
+
+#include "minddata/dataset/api/python/pybind_register.h"
+
+#include "minddata/dataset/engine/gnn/graph.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(
+  Graph, 0, ([](const py::module *m) {
+    (void)py::class_<gnn::Graph, std::shared_ptr<gnn::Graph>>(*m, "Graph")
+      .def(py::init([](std::string dataset_file, int32_t num_workers) {
+        std::shared_ptr<gnn::Graph> g_out = std::make_shared<gnn::Graph>(dataset_file, num_workers);
+        THROW_IF_ERROR(g_out->Init());
+        return g_out;
+      }))
+      .def("get_all_nodes",
+           [](gnn::Graph &g, gnn::NodeType node_type) {
+             std::shared_ptr<Tensor> out;
+             THROW_IF_ERROR(g.GetAllNodes(node_type, &out));
+             return out;
+           })
+      .def("get_all_edges",
+           [](gnn::Graph &g, gnn::EdgeType edge_type) {
+             std::shared_ptr<Tensor> out;
+             THROW_IF_ERROR(g.GetAllEdges(edge_type, &out));
+             return out;
+           })
+      .def("get_nodes_from_edges",
+           [](gnn::Graph &g, std::vector<gnn::NodeIdType> edge_list) {
+             std::shared_ptr<Tensor> out;
+             THROW_IF_ERROR(g.GetNodesFromEdges(edge_list, &out));
+             return out;
+           })
+      .def("get_all_neighbors",
+           [](gnn::Graph &g, std::vector<gnn::NodeIdType> node_list, gnn::NodeType neighbor_type) {
+             std::shared_ptr<Tensor> out;
+             THROW_IF_ERROR(g.GetAllNeighbors(node_list, neighbor_type, &out));
+             return out;
+           })
+      .def("get_sampled_neighbors",
+           [](gnn::Graph &g, std::vector<gnn::NodeIdType> node_list, std::vector<gnn::NodeIdType> neighbor_nums,
+              std::vector<gnn::NodeType> neighbor_types) {
+             std::shared_ptr<Tensor> out;
+             THROW_IF_ERROR(g.GetSampledNeighbors(node_list, neighbor_nums, neighbor_types, &out));
+             return out;
+           })
+      .def("get_neg_sampled_neighbors",
+           [](gnn::Graph &g, std::vector<gnn::NodeIdType> node_list, gnn::NodeIdType neighbor_num,
+              gnn::NodeType neg_neighbor_type) {
+             std::shared_ptr<Tensor> out;
+             THROW_IF_ERROR(g.GetNegSampledNeighbors(node_list, neighbor_num, neg_neighbor_type, &out));
+             return out;
+           })
+      .def("get_node_feature",
+           [](gnn::Graph &g, std::shared_ptr<Tensor> node_list, std::vector<gnn::FeatureType> feature_types) {
+             TensorRow out;
+             THROW_IF_ERROR(g.GetNodeFeature(node_list, feature_types, &out));
+             return out.getRow();
+           })
+      .def("get_edge_feature",
+           [](gnn::Graph &g, std::shared_ptr<Tensor> edge_list, std::vector<gnn::FeatureType> feature_types) {
+             TensorRow out;
+             THROW_IF_ERROR(g.GetEdgeFeature(edge_list, feature_types, &out));
+             return out.getRow();
+           })
+      .def("graph_info",
+           [](gnn::Graph &g) {
+             py::dict out;
+             THROW_IF_ERROR(g.GraphInfo(&out));
+             return out;
+           })
+      .def("random_walk",
+           [](gnn::Graph &g, std::vector<gnn::NodeIdType> node_list, std::vector<gnn::NodeType> meta_path,
+              float step_home_param, float step_away_param, gnn::NodeIdType default_node) {
+             std::shared_ptr<Tensor> out;
+             THROW_IF_ERROR(g.RandomWalk(node_list, meta_path, step_home_param, step_away_param, default_node, &out));
+             return out;
+           });
+  }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/kernels/bindings.cc

+/**
+ * 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 "pybind11/pybind11.h"
+
+#include "minddata/dataset/api/python/pybind_register.h"
+#include "minddata/dataset/core/global_context.h"
+#include "minddata/dataset/api/python/de_pipeline.h"
+
+#include "mindspore/ccsrc/minddata/dataset/kernels/data/compose_op.h"
+#include "mindspore/ccsrc/minddata/dataset/kernels/data/no_op.h"
+#include "minddata/dataset/kernels/py_func_op.h"
+#include "mindspore/ccsrc/minddata/dataset/kernels/data/random_apply_op.h"
+#include "mindspore/ccsrc/minddata/dataset/kernels/data/random_choice_op.h"
+
+namespace mindspore {
+namespace dataset {
+
+Status PyListToTensorOps(const py::list &py_ops, std::vector<std::shared_ptr<TensorOp>> *ops) {
+  RETURN_UNEXPECTED_IF_NULL(ops);
+  for (auto op : py_ops) {
+    if (py::isinstance<TensorOp>(op)) {
+      ops->emplace_back(op.cast<std::shared_ptr<TensorOp>>());
+    } else if (py::isinstance<py::function>(op)) {
+      ops->emplace_back(std::make_shared<PyFuncOp>(op.cast<py::function>()));
+    } else {
+      RETURN_STATUS_UNEXPECTED("element is neither a TensorOp nor a pyfunc.");
+    }
+  }
+  CHECK_FAIL_RETURN_UNEXPECTED(!ops->empty(), "TensorOp list is empty.");
+  for (auto const &op : *ops) {
+    RETURN_UNEXPECTED_IF_NULL(op);
+  }
+  return Status::OK();
+}
+
+PYBIND_REGISTER(TensorOp, 0, ([](const py::module *m) {
+                  (void)py::class_<TensorOp, std::shared_ptr<TensorOp>>(*m, "TensorOp")
+                    .def("__deepcopy__", [](py::object &t, py::dict memo) { return t; });
+                }));
+
+PYBIND_REGISTER(ComposeOp, 1, ([](const py::module *m) {
+                  (void)py::class_<ComposeOp, TensorOp, std::shared_ptr<ComposeOp>>(*m, "ComposeOp")
+                    .def(py::init([](const py::list &ops) {
+                      std::vector<std::shared_ptr<TensorOp>> t_ops;
+                      THROW_IF_ERROR(PyListToTensorOps(ops, &t_ops));
+                      return std::make_shared<ComposeOp>(t_ops);
+                    }));
+                }));
+
+PYBIND_REGISTER(NoOp, 1, ([](const py::module *m) {
+                  (void)py::class_<NoOp, TensorOp, std::shared_ptr<NoOp>>(
+                    *m, "NoOp", "TensorOp that does nothing, for testing purposes only.")
+                    .def(py::init<>());
+                }));
+
+PYBIND_REGISTER(RandomChoiceOp, 1, ([](const py::module *m) {
+                  (void)py::class_<RandomChoiceOp, TensorOp, std::shared_ptr<RandomChoiceOp>>(*m, "RandomChoiceOp")
+                    .def(py::init([](const py::list &ops) {
+                      std::vector<std::shared_ptr<TensorOp>> t_ops;
+                      THROW_IF_ERROR(PyListToTensorOps(ops, &t_ops));
+                      return std::make_shared<RandomChoiceOp>(t_ops);
+                    }));
+                }));
+
+PYBIND_REGISTER(RandomApplyOp, 1, ([](const py::module *m) {
+                  (void)py::class_<RandomApplyOp, TensorOp, std::shared_ptr<RandomApplyOp>>(*m, "RandomApplyOp")
+                    .def(py::init([](double prob, const py::list &ops) {
+                      std::vector<std::shared_ptr<TensorOp>> t_ops;
+                      THROW_IF_ERROR(PyListToTensorOps(ops, &t_ops));
+                      if (prob < 0 || prob > 1) {
+                        THROW_IF_ERROR(Status(StatusCode::kUnexpectedError, "prob needs to be within [0,1]."));
+                      }
+                      return std::make_shared<RandomApplyOp>(prob, t_ops);
+                    }));
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/kernels/data/bindings.cc

+/**
+ * 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 "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+#include "pybind11/stl_bind.h"
+
+#include "minddata/dataset/api/python/pybind_register.h"
+#include "minddata/dataset/kernels/data/concatenate_op.h"
+#include "minddata/dataset/kernels/data/duplicate_op.h"
+#include "minddata/dataset/kernels/data/fill_op.h"
+#include "minddata/dataset/kernels/data/mask_op.h"
+#include "minddata/dataset/kernels/data/one_hot_op.h"
+#include "minddata/dataset/kernels/data/pad_end_op.h"
+#include "minddata/dataset/kernels/data/slice_op.h"
+#include "minddata/dataset/kernels/data/to_float16_op.h"
+#include "minddata/dataset/kernels/data/type_cast_op.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(ConcatenateOp, 1, ([](const py::module *m) {
+                  (void)py::class_<ConcatenateOp, TensorOp, std::shared_ptr<ConcatenateOp>>(
+                    *m, "ConcatenateOp", "Tensor operation concatenate tensors.")
+                    .def(py::init<int8_t, std::shared_ptr<Tensor>, std::shared_ptr<Tensor>>(), py::arg("axis"),
+                         py::arg("prepend").none(true), py::arg("append").none(true));
+                }));
+
+PYBIND_REGISTER(DuplicateOp, 1, ([](const py::module *m) {
+                  (void)py::class_<DuplicateOp, TensorOp, std::shared_ptr<DuplicateOp>>(*m, "DuplicateOp",
+                                                                                        "Duplicate tensor.")
+                    .def(py::init<>());
+                }));
+
+PYBIND_REGISTER(FillOp, 1, ([](const py::module *m) {
+                  (void)py::class_<FillOp, TensorOp, std::shared_ptr<FillOp>>(
+                    *m, "FillOp", "Tensor operation to return tensor filled with same value as input fill value.")
+                    .def(py::init<std::shared_ptr<Tensor>>());
+                }));
+
+PYBIND_REGISTER(MaskOp, 1, ([](const py::module *m) {
+                  (void)py::class_<MaskOp, TensorOp, std::shared_ptr<MaskOp>>(
+                    *m, "MaskOp", "Tensor mask operation using relational comparator")
+                    .def(py::init<RelationalOp, std::shared_ptr<Tensor>, DataType>());
+                }));
+
+PYBIND_REGISTER(OneHotOp, 1, ([](const py::module *m) {
+                  (void)py::class_<OneHotOp, TensorOp, std::shared_ptr<OneHotOp>>(
+                    *m, "OneHotOp", "Tensor operation to apply one hot encoding. Takes number of classes.")
+                    .def(py::init<int32_t>());
+                }));
+
+PYBIND_REGISTER(PadEndOp, 1, ([](const py::module *m) {
+                  (void)py::class_<PadEndOp, TensorOp, std::shared_ptr<PadEndOp>>(
+                    *m, "PadEndOp", "Tensor operation to pad end of tensor with a pad value.")
+                    .def(py::init<TensorShape, std::shared_ptr<Tensor>>());
+                }));
+
+PYBIND_REGISTER(SliceOp, 1, ([](const py::module *m) {
+                  (void)py::class_<SliceOp, TensorOp, std::shared_ptr<SliceOp>>(*m, "SliceOp",
+                                                                                "Tensor slice operation.")
+                    .def(py::init<bool>())
+                    .def(py::init([](const py::list &py_list) {
+                      std::vector<dsize_t> c_list;
+                      for (auto l : py_list) {
+                        if (!l.is_none()) {
+                          c_list.push_back(py::reinterpret_borrow<py::int_>(l));
+                        }
+                      }
+                      return std::make_shared<SliceOp>(c_list);
+                    }))
+                    .def(py::init([](const py::tuple &py_slice) {
+                      if (py_slice.size() != 3) {
+                        THROW_IF_ERROR(Status(StatusCode::kUnexpectedError, __LINE__, __FILE__, "Wrong slice object"));
+                      }
+                      Slice c_slice;
+                      if (!py_slice[0].is_none() && !py_slice[1].is_none() && !py_slice[2].is_none()) {
+                        c_slice = Slice(py::reinterpret_borrow<py::int_>(py_slice[0]),
+                                        py::reinterpret_borrow<py::int_>(py_slice[1]),
+                                        py::reinterpret_borrow<py::int_>(py_slice[2]));
+                      } else if (py_slice[0].is_none() && py_slice[2].is_none()) {
+                        c_slice = Slice(py::reinterpret_borrow<py::int_>(py_slice[1]));
+                      } else if (!py_slice[0].is_none() && !py_slice[1].is_none()) {
+                        c_slice = Slice(py::reinterpret_borrow<py::int_>(py_slice[0]),
+                                        py::reinterpret_borrow<py::int_>(py_slice[1]));
+                      }
+
+                      if (!c_slice.valid()) {
+                        THROW_IF_ERROR(Status(StatusCode::kUnexpectedError, __LINE__, __FILE__, "Wrong slice object"));
+                      }
+                      return std::make_shared<SliceOp>(c_slice);
+                    }));
+                }));
+
+PYBIND_REGISTER(ToFloat16Op, 1, ([](const py::module *m) {
+                  (void)py::class_<ToFloat16Op, TensorOp, std::shared_ptr<ToFloat16Op>>(
+                    *m, "ToFloat16Op", py::dynamic_attr(),
+                    "Tensor operator to type cast float32 data to a float16 type.")
+                    .def(py::init<>());
+                }));
+
+PYBIND_REGISTER(TypeCastOp, 1, ([](const py::module *m) {
+                  (void)py::class_<TypeCastOp, TensorOp, std::shared_ptr<TypeCastOp>>(
+                    *m, "TypeCastOp", "Tensor operator to type cast data to a specified type.")
+                    .def(py::init<DataType>(), py::arg("data_type"))
+                    .def(py::init<std::string>(), py::arg("data_type"));
+                }));
+
+PYBIND_REGISTER(RelationalOp, 0, ([](const py::module *m) {
+                  (void)py::enum_<RelationalOp>(*m, "RelationalOp", py::arithmetic())
+                    .value("EQ", RelationalOp::kEqual)
+                    .value("NE", RelationalOp::kNotEqual)
+                    .value("LT", RelationalOp::kLess)
+                    .value("LE", RelationalOp::kLessEqual)
+                    .value("GT", RelationalOp::kGreater)
+                    .value("GE", RelationalOp::kGreaterEqual)
+                    .export_values();
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/text/bindings.cc

+/**
+ * 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 "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+#include "pybind11/stl_bind.h"
+
+#include "minddata/dataset/api/python/pybind_register.h"
+#include "minddata/dataset/text/vocab.h"
+#include "minddata/dataset/text/sentence_piece_vocab.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(Vocab, 0, ([](const py::module *m) {
+                  (void)py::class_<Vocab, std::shared_ptr<Vocab>>(*m, "Vocab")
+                    .def(py::init<>())
+                    .def_static("from_list",
+                                [](const py::list &words, const py::list &special_tokens, bool special_first) {
+                                  std::shared_ptr<Vocab> v;
+                                  THROW_IF_ERROR(Vocab::BuildFromPyList(words, special_tokens, special_first, &v));
+                                  return v;
+                                })
+                    .def_static(
+                      "from_file",
+                      [](const std::string &path, const std::string &dlm, int32_t vocab_size,
+                         const py::list &special_tokens, bool special_first) {
+                        std::shared_ptr<Vocab> v;
+                        THROW_IF_ERROR(Vocab::BuildFromFile(path, dlm, vocab_size, special_tokens, special_first, &v));
+                        return v;
+                      })
+                    .def_static("from_dict", [](const py::dict &words) {
+                      std::shared_ptr<Vocab> v;
+                      THROW_IF_ERROR(Vocab::BuildFromPyDict(words, &v));
+                      return v;
+                    });
+                }));
+
+PYBIND_REGISTER(SentencePieceVocab, 0, ([](const py::module *m) {
+                  (void)py::class_<SentencePieceVocab, std::shared_ptr<SentencePieceVocab>>(*m, "SentencePieceVocab")
+                    .def(py::init<>())
+                    .def_static("from_file",
+                                [](const py::list &paths, const int vocab_size, const float character_coverage,
+                                   const SentencePieceModel model_type, const py::dict &params) {
+                                  std::shared_ptr<SentencePieceVocab> v;
+                                  std::vector<std::string> path_list;
+                                  for (auto path : paths) {
+                                    path_list.emplace_back(py::str(path));
+                                  }
+                                  std::unordered_map<std::string, std::string> param_map;
+                                  for (auto param : params) {
+                                    std::string key = py::reinterpret_borrow<py::str>(param.first);
+                                    if (key == "input" || key == "vocab_size" || key == "model_prefix" ||
+                                        key == "character_coverage" || key == "model_type") {
+                                      continue;
+                                    }
+                                    param_map[key] = py::reinterpret_borrow<py::str>(param.second);
+                                  }
+                                  THROW_IF_ERROR(SentencePieceVocab::BuildFromFile(
+                                    path_list, vocab_size, character_coverage, model_type, param_map, &v));
+                                  return v;
+                                })
+                    .def_static("save_model", [](const std::shared_ptr<SentencePieceVocab> *vocab, std::string path,
+                                                 std::string filename) {
+                      THROW_IF_ERROR(SentencePieceVocab::SaveModel(vocab, path, filename));
+                    });
+                }));
+
+PYBIND_REGISTER(SentencePieceModel, 0, ([](const py::module *m) {
+                  (void)py::enum_<SentencePieceModel>(*m, "SentencePieceModel", py::arithmetic())
+                    .value("DE_SENTENCE_PIECE_UNIGRAM", SentencePieceModel::kUnigram)
+                    .value("DE_SENTENCE_PIECE_BPE", SentencePieceModel::kBpe)
+                    .value("DE_SENTENCE_PIECE_CHAR", SentencePieceModel::kChar)
+                    .value("DE_SENTENCE_PIECE_WORD", SentencePieceModel::kWord)
+                    .export_values();
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/dataset/text/kernels/bindings.cc

+/**
+ * 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 "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+#include "pybind11/stl_bind.h"
+#include "minddata/dataset/api/python/pybind_register.h"
+
+#include "minddata/dataset/text/kernels/jieba_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/lookup_op.h"
+#include "minddata/dataset/text/kernels/ngram_op.h"
+#include "minddata/dataset/text/kernels/sliding_window_op.h"
+#include "minddata/dataset/text/kernels/to_number_op.h"
+#include "minddata/dataset/text/kernels/unicode_char_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/wordpiece_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/sentence_piece_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/truncate_sequence_pair_op.h"
+
+#ifdef ENABLE_ICU4C
+#include "minddata/dataset/text/kernels/basic_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/bert_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/case_fold_op.h"
+#include "minddata/dataset/text/kernels/normalize_utf8_op.h"
+#include "minddata/dataset/text/kernels/regex_replace_op.h"
+#include "minddata/dataset/text/kernels/regex_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/unicode_script_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/whitespace_tokenizer_op.h"
+#endif
+
+namespace mindspore {
+namespace dataset {
+
+#ifdef ENABLE_ICU4C
+
+PYBIND_REGISTER(BasicTokenizerOp, 1, ([](const py::module *m) {
+                  (void)py::class_<BasicTokenizerOp, TensorOp, std::shared_ptr<BasicTokenizerOp>>(
+                    *m, "BasicTokenizerOp", "Tokenize a scalar tensor of UTF-8 string by specific rules.")
+                    .def(py::init<const bool &, const bool &, const NormalizeForm &, const bool &, const bool &>(),
+                         py::arg("lower_case") = BasicTokenizerOp::kDefLowerCase,
+                         py::arg("keep_whitespace") = BasicTokenizerOp::kDefKeepWhitespace,
+                         py::arg("normalization_form") = BasicTokenizerOp::kDefNormalizationForm,
+                         py::arg("preserve_unused_token") = BasicTokenizerOp::kDefPreserveUnusedToken,
+                         py::arg("with_offsets") = BasicTokenizerOp::kDefWithOffsets);
+                }));
+
+PYBIND_REGISTER(WhitespaceTokenizerOp, 1, ([](const py::module *m) {
+                  (void)py::class_<WhitespaceTokenizerOp, TensorOp, std::shared_ptr<WhitespaceTokenizerOp>>(
+                    *m, "WhitespaceTokenizerOp", "Tokenize a scalar tensor of UTF-8 string on ICU defined whitespaces.")
+                    .def(py::init<const bool &>(), py::arg(" with_offsets ") = WhitespaceTokenizerOp::kDefWithOffsets);
+                }));
+
+PYBIND_REGISTER(UnicodeScriptTokenizerOp, 1, ([](const py::module *m) {
+                  (void)py::class_<UnicodeScriptTokenizerOp, TensorOp, std::shared_ptr<UnicodeScriptTokenizerOp>>(
+                    *m, "UnicodeScriptTokenizerOp",
+                    "Tokenize a scalar tensor of UTF-8 string on Unicode script boundaries.")
+                    .def(py::init<>())
+                    .def(py::init<const bool &, const bool &>(),
+                         py::arg("keep_whitespace") = UnicodeScriptTokenizerOp::kDefKeepWhitespace,
+                         py::arg("with_offsets") = UnicodeScriptTokenizerOp::kDefWithOffsets);
+                }));
+
+PYBIND_REGISTER(CaseFoldOp, 1, ([](const py::module *m) {
+                  (void)py::class_<CaseFoldOp, TensorOp, std::shared_ptr<CaseFoldOp>>(
+                    *m, "CaseFoldOp", "Apply case fold operation on utf-8 string tensor")
+                    .def(py::init<>());
+                }));
+
+PYBIND_REGISTER(NormalizeUTF8Op, 1, ([](const py::module *m) {
+                  (void)py::class_<NormalizeUTF8Op, TensorOp, std::shared_ptr<NormalizeUTF8Op>>(
+                    *m, "NormalizeUTF8Op", "Apply normalize operation on utf-8 string tensor.")
+                    .def(py::init<>())
+                    .def(py::init<NormalizeForm>(), py::arg("normalize_form") = NormalizeUTF8Op::kDefNormalizeForm);
+                }));
+
+PYBIND_REGISTER(RegexReplaceOp, 1, ([](const py::module *m) {
+                  (void)py::class_<RegexReplaceOp, TensorOp, std::shared_ptr<RegexReplaceOp>>(
+                    *m, "RegexReplaceOp",
+                    "Replace utf-8 string tensor with 'replace' according to regular expression 'pattern'.")
+                    .def(py::init<const std::string &, const std::string &, bool>(), py::arg("pattern"),
+                         py::arg("replace"), py::arg("replace_all"));
+                }));
+
+PYBIND_REGISTER(RegexTokenizerOp, 1, ([](const py::module *m) {
+                  (void)py::class_<RegexTokenizerOp, TensorOp, std::shared_ptr<RegexTokenizerOp>>(
+                    *m, "RegexTokenizerOp", "Tokenize a scalar tensor of UTF-8 string by regex expression pattern.")
+                    .def(py::init<const std::string &, const std::string &, const bool &>(), py::arg("delim_pattern"),
+                         py::arg("keep_delim_pattern"), py::arg("with_offsets") = RegexTokenizerOp::kDefWithOffsets);
+                }));
+PYBIND_REGISTER(BertTokenizerOp, 1, ([](const py::module *m) {
+                  (void)py::class_<BertTokenizerOp, TensorOp, std::shared_ptr<BertTokenizerOp>>(
+                    *m, "BertTokenizerOp", "Tokenizer used for Bert text process.")
+                    .def(py::init<const std::shared_ptr<Vocab> &, const std::string &, const int &, const std::string &,
+                                  const bool &, const bool &, const NormalizeForm &, const bool &, const bool &>(),
+                         py::arg("vocab"),
+                         py::arg("suffix_indicator") = std::string(WordpieceTokenizerOp::kDefSuffixIndicator),
+                         py::arg("max_bytes_per_token") = WordpieceTokenizerOp::kDefMaxBytesPerToken,
+                         py::arg("unknown_token") = std::string(WordpieceTokenizerOp::kDefUnknownToken),
+                         py::arg("lower_case") = BasicTokenizerOp::kDefLowerCase,
+                         py::arg("keep_whitespace") = BasicTokenizerOp::kDefKeepWhitespace,
+                         py::arg("normalization_form") = BasicTokenizerOp::kDefNormalizationForm,
+                         py::arg("preserve_unused_token") = BasicTokenizerOp::kDefPreserveUnusedToken,
+                         py::arg("with_offsets") = WordpieceTokenizerOp::kDefWithOffsets);
+                }));
+
+PYBIND_REGISTER(NormalizeForm, 0, ([](const py::module *m) {
+                  (void)py::enum_<NormalizeForm>(*m, "NormalizeForm", py::arithmetic())
+                    .value("DE_NORMALIZE_NONE", NormalizeForm::kNone)
+                    .value("DE_NORMALIZE_NFC", NormalizeForm::kNfc)
+                    .value("DE_NORMALIZE_NFKC", NormalizeForm::kNfkc)
+                    .value("DE_NORMALIZE_NFD", NormalizeForm::kNfd)
+                    .value("DE_NORMALIZE_NFKD", NormalizeForm::kNfkd)
+                    .export_values();
+                }));
+
+#endif
+
+PYBIND_REGISTER(JiebaTokenizerOp, 1, ([](const py::module *m) {
+                  (void)py::class_<JiebaTokenizerOp, TensorOp, std::shared_ptr<JiebaTokenizerOp>>(
+                    *m, "JiebaTokenizerOp", "")
+                    .def(py::init<const std::string &, const std::string &, const JiebaMode &, const bool &>(),
+                         py::arg("hmm_path"), py::arg("mp_path"), py::arg("mode") = JiebaMode::kMix,
+                         py::arg("with_offsets") = JiebaTokenizerOp::kDefWithOffsets)
+                    .def("add_word", [](JiebaTokenizerOp &self, const std::string word, int freq) {
+                      THROW_IF_ERROR(self.AddWord(word, freq));
+                    });
+                }));
+
+PYBIND_REGISTER(UnicodeCharTokenizerOp, 1, ([](const py::module *m) {
+                  (void)py::class_<UnicodeCharTokenizerOp, TensorOp, std::shared_ptr<UnicodeCharTokenizerOp>>(
+                    *m, "UnicodeCharTokenizerOp", "Tokenize a scalar tensor of UTF-8 string to Unicode characters.")
+                    .def(py::init<const bool &>(), py::arg("with_offsets") = UnicodeCharTokenizerOp::kDefWithOffsets);
+                }));
+
+PYBIND_REGISTER(LookupOp, 1, ([](const py::module *m) {
+                  (void)py::class_<LookupOp, TensorOp, std::shared_ptr<LookupOp>>(
+                    *m, "LookupOp", "Tensor operation to LookUp each word.")
+                    .def(py::init([](std::shared_ptr<Vocab> vocab, const py::object &py_word) {
+                      if (vocab == nullptr) {
+                        THROW_IF_ERROR(Status(StatusCode::kUnexpectedError, "vocab object type is incorrect or null."));
+                      }
+                      if (py_word.is_none()) {
+                        return std::make_shared<LookupOp>(vocab, Vocab::kNoTokenExists);
+                      }
+                      std::string word = py::reinterpret_borrow<py::str>(py_word);
+                      WordIdType default_id = vocab->Lookup(word);
+                      if (default_id == Vocab::kNoTokenExists) {
+                        THROW_IF_ERROR(Status(StatusCode::kUnexpectedError,
+                                              "default unknown token: " + word + " doesn't exist in vocab."));
+                      }
+                      return std::make_shared<LookupOp>(vocab, default_id);
+                    }));
+                }));
+
+PYBIND_REGISTER(NgramOp, 1, ([](const py::module *m) {
+                  (void)py::class_<NgramOp, TensorOp, std::shared_ptr<NgramOp>>(*m, "NgramOp",
+                                                                                "TensorOp performs ngram mapping.")
+                    .def(py::init<const std::vector<int32_t> &, int32_t, int32_t, const std::string &,
+                                  const std::string &, const std::string &>(),
+                         py::arg("ngrams"), py::arg("l_pad_len"), py::arg("r_pad_len"), py::arg("l_pad_token"),
+                         py::arg("r_pad_token"), py::arg("separator"));
+                }));
+
+PYBIND_REGISTER(
+  WordpieceTokenizerOp, 1, ([](const py::module *m) {
+    (void)py::class_<WordpieceTokenizerOp, TensorOp, std::shared_ptr<WordpieceTokenizerOp>>(
+      *m, "WordpieceTokenizerOp", "Tokenize scalar token or 1-D tokens to subword tokens.")
+      .def(
+        py::init<const std::shared_ptr<Vocab> &, const std::string &, const int &, const std::string &, const bool &>(),
+        py::arg("vocab"), py::arg("suffix_indicator") = std::string(WordpieceTokenizerOp::kDefSuffixIndicator),
+        py::arg("max_bytes_per_token") = WordpieceTokenizerOp::kDefMaxBytesPerToken,
+        py::arg("unknown_token") = std::string(WordpieceTokenizerOp::kDefUnknownToken),
+        py::arg("with_offsets") = WordpieceTokenizerOp::kDefWithOffsets);
+  }));
+
+PYBIND_REGISTER(SlidingWindowOp, 1, ([](const py::module *m) {
+                  (void)py::class_<SlidingWindowOp, TensorOp, std::shared_ptr<SlidingWindowOp>>(
+                    *m, "SlidingWindowOp", "TensorOp to apply sliding window to a 1-D Tensor.")
+                    .def(py::init<uint32_t, int32_t>(), py::arg("width"), py::arg("axis"));
+                }));
+
+PYBIND_REGISTER(
+  SentencePieceTokenizerOp, 1, ([](const py::module *m) {
+    (void)py::class_<SentencePieceTokenizerOp, TensorOp, std::shared_ptr<SentencePieceTokenizerOp>>(
+      *m, "SentencePieceTokenizerOp", "Tokenize scalar token or 1-D tokens to  tokens by sentence piece.")
+      .def(
+        py::init<std::shared_ptr<SentencePieceVocab> &, const SPieceTokenizerLoadType, const SPieceTokenizerOutType>(),
+        py::arg("vocab"), py::arg("load_type") = SPieceTokenizerLoadType::kModel,
+        py::arg("out_type") = SPieceTokenizerOutType::kString)
+      .def(py::init<const std::string &, const std::string &, const SPieceTokenizerLoadType,
+                    const SPieceTokenizerOutType>(),
+           py::arg("model_path"), py::arg("model_filename"), py::arg("load_type") = SPieceTokenizerLoadType::kFile,
+           py::arg("out_type") = SPieceTokenizerOutType::kString);
+  }));
+
+PYBIND_REGISTER(ToNumberOp, 1, ([](const py::module *m) {
+                  (void)py::class_<ToNumberOp, TensorOp, std::shared_ptr<ToNumberOp>>(
+                    *m, "ToNumberOp", "TensorOp to convert strings to numbers.")
+                    .def(py::init<DataType>(), py::arg("data_type"))
+                    .def(py::init<std::string>(), py::arg("data_type"));
+                }));
+
+PYBIND_REGISTER(TruncateSequencePairOp, 1, ([](const py::module *m) {
+                  (void)py::class_<TruncateSequencePairOp, TensorOp, std::shared_ptr<TruncateSequencePairOp>>(
+                    *m, "TruncateSequencePairOp", "Tensor operation to truncate two tensors to a max_length")
+                    .def(py::init<int64_t>());
+                }));
+
+PYBIND_REGISTER(JiebaMode, 0, ([](const py::module *m) {
+                  (void)py::enum_<JiebaMode>(*m, "JiebaMode", py::arithmetic())
+                    .value("DE_JIEBA_MIX", JiebaMode::kMix)
+                    .value("DE_JIEBA_MP", JiebaMode::kMp)
+                    .value("DE_JIEBA_HMM", JiebaMode::kHmm)
+                    .export_values();
+                }));
+
+PYBIND_REGISTER(SPieceTokenizerOutType, 0, ([](const py::module *m) {
+                  (void)py::enum_<SPieceTokenizerOutType>(*m, "SPieceTokenizerOutType", py::arithmetic())
+                    .value("DE_SPIECE_TOKENIZER_OUTTYPE_KString", SPieceTokenizerOutType::kString)
+                    .value("DE_SPIECE_TOKENIZER_OUTTYPE_KINT", SPieceTokenizerOutType::kInt)
+                    .export_values();
+                }));
+
+PYBIND_REGISTER(SPieceTokenizerLoadType, 0, ([](const py::module *m) {
+                  (void)py::enum_<SPieceTokenizerLoadType>(*m, "SPieceTokenizerLoadType", py::arithmetic())
+                    .value("DE_SPIECE_TOKENIZER_LOAD_KFILE", SPieceTokenizerLoadType::kFile)
+                    .value("DE_SPIECE_TOKENIZER_LOAD_KMODEL", SPieceTokenizerLoadType::kModel)
+                    .export_values();
+                }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/bindings/mindrecord/include/bindings.cc

+/**
+ * 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 "pybind11/pybind11.h"
+#include "pybind11/stl_bind.h"
+
+#include "minddata/dataset/api/python/pybind_register.h"
+
+#include "minddata/dataset/util/random.h"
+#include "minddata/mindrecord/include/shard_distributed_sample.h"
+#include "minddata/mindrecord/include/shard_operator.h"
+#include "minddata/mindrecord/include/shard_pk_sample.h"
+#include "minddata/mindrecord/include/shard_sample.h"
+#include "minddata/mindrecord/include/shard_sequential_sample.h"
+#include "minddata/mindrecord/include/shard_shuffle.h"
+
+namespace mindspore {
+namespace dataset {
+
+PYBIND_REGISTER(ShardOperator, 0, ([](const py::module *m) {
+                  (void)py::class_<mindrecord::ShardOperator, std::shared_ptr<mindrecord::ShardOperator>>(
+                    *m, "ShardOperator")
+                    .def("add_child",
+                         [](std::shared_ptr<mindrecord::ShardOperator> self,
+                            std::shared_ptr<mindrecord::ShardOperator> child) { self->SetChildOp(child); });
+                }));
+
+PYBIND_REGISTER(ShardDistributedSample, 1, ([](const py::module *m) {
+                  (void)py::class_<mindrecord::ShardDistributedSample, mindrecord::ShardSample,
+                                   std::shared_ptr<mindrecord::ShardDistributedSample>>(*m,
+                                                                                        "MindrecordDistributedSampler")
+                    .def(py::init<int64_t, int64_t, bool, uint32_t, int64_t>());
+                }));
+
+PYBIND_REGISTER(
+  ShardPkSample, 1, ([](const py::module *m) {
+    (void)py::class_<mindrecord::ShardPkSample, mindrecord::ShardOperator, std::shared_ptr<mindrecord::ShardPkSample>>(
+      *m, "MindrecordPkSampler")
+      .def(py::init([](int64_t kVal, std::string kColumn, bool shuffle) {
+        if (shuffle == true) {
+          return std::make_shared<mindrecord::ShardPkSample>(kColumn, kVal, std::numeric_limits<int64_t>::max(),
+                                                             GetSeed());
+        } else {
+          return std::make_shared<mindrecord::ShardPkSample>(kColumn, kVal);
+        }
+      }));
+  }));
+
+PYBIND_REGISTER(
+  ShardSample, 0, ([](const py::module *m) {
+    (void)py::class_<mindrecord::ShardSample, mindrecord::ShardOperator, std::shared_ptr<mindrecord::ShardSample>>(
+      *m, "MindrecordSubsetRandomSampler")
+      .def(py::init<std::vector<int64_t>, uint32_t>(), py::arg("indices"), py::arg("seed") = GetSeed());
+  }));
+
+PYBIND_REGISTER(ShardSequentialSample, 0, ([](const py::module *m) {
+                  (void)py::class_<mindrecord::ShardSequentialSample, mindrecord::ShardSample,
+                                   std::shared_ptr<mindrecord::ShardSequentialSample>>(*m,
+                                                                                       "MindrecordSequentialSampler")
+                    .def(py::init([](int num_samples, int start_index) {
+                      return std::make_shared<mindrecord::ShardSequentialSample>(num_samples, start_index);
+                    }));
+                }));
+
+PYBIND_REGISTER(
+  ShardShuffle, 1, ([](const py::module *m) {
+    (void)py::class_<mindrecord::ShardShuffle, mindrecord::ShardOperator, std::shared_ptr<mindrecord::ShardShuffle>>(
+      *m, "MindrecordRandomSampler")
+      .def(py::init([](int64_t num_samples, bool replacement, bool reshuffle_each_epoch) {
+        return std::make_shared<mindrecord::ShardShuffle>(GetSeed(), num_samples, replacement, reshuffle_each_epoch);
+      }));
+  }));
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/de_pipeline.cc → mindspore/ccsrc/minddata/dataset/api/python/de_pipeline.cc

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#include "minddata/dataset/api/de_pipeline.h"
+#include "minddata/dataset/api/python/de_pipeline.h"
 
 #include <algorithm>
 #include <set>

mindspore/ccsrc/minddata/dataset/api/python/pybind_register.cc

+/**
+ * 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 "minddata/dataset/api/python/pybind_register.h"
+
+namespace mindspore {
+namespace dataset {
+
+PybindDefinedFunctionRegister &PybindDefinedFunctionRegister::GetSingleton() {
+  static PybindDefinedFunctionRegister instance;
+  return instance;
+}
+
+// This is where we externalize the C logic as python modules
+PYBIND11_MODULE(_c_dataengine, m) {
+  m.doc() = "pybind11 for _c_dataengine";
+
+  auto all_fns = mindspore::dataset::PybindDefinedFunctionRegister::AllFunctions();
+
+  for (auto &item : all_fns) {
+    for (auto &func : item.second) {
+      func.second(&m);
+    }
+  }
+}
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/api/python/pybind_register.h

+/**
+ * Copyright 2019 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.
+ */
+
+#ifndef API_PYBIND_API_H_
+#define API_PYBIND_API_H_
+
+#include <map>
+#include <string>
+#include <memory>
+#include <functional>
+#include <utility>
+
+#include "pybind11/pybind11.h"
+#include "pybind11/stl.h"
+
+namespace py = pybind11;
+namespace mindspore {
+
+namespace dataset {
+#define THROW_IF_ERROR(s)                                      \
+  do {                                                         \
+    Status rc = std::move(s);                                  \
+    if (rc.IsError()) throw std::runtime_error(rc.ToString()); \
+  } while (false)
+
+using PybindDefineFunc = std::function<void(py::module *)>;
+
+class PybindDefinedFunctionRegister {
+ public:
+  static void Register(const std::string &name, const uint8_t &priority, const PybindDefineFunc &fn) {
+    return GetSingleton().RegisterFn(name, priority, fn);
+  }
+
+  PybindDefinedFunctionRegister(const PybindDefinedFunctionRegister &) = delete;
+
+  PybindDefinedFunctionRegister &operator=(const PybindDefinedFunctionRegister &) = delete;
+
+  static std::map<uint8_t, std::map<std::string, PybindDefineFunc>> &AllFunctions() {
+    return GetSingleton().module_fns_;
+  }
+  std::map<uint8_t, std::map<std::string, PybindDefineFunc>> module_fns_;
+
+ protected:
+  PybindDefinedFunctionRegister() = default;
+
+  virtual ~PybindDefinedFunctionRegister() = default;
+
+  static PybindDefinedFunctionRegister &GetSingleton();
+
+  void RegisterFn(const std::string &name, const uint8_t &priority, const PybindDefineFunc &fn) {
+    module_fns_[priority][name] = fn;
+  }
+};
+
+class PybindDefineRegisterer {
+ public:
+  PybindDefineRegisterer(const std::string &name, const uint8_t &priority, const PybindDefineFunc &fn) {
+    PybindDefinedFunctionRegister::Register(name, priority, fn);
+  }
+  ~PybindDefineRegisterer() = default;
+};
+
+#ifdef ENABLE_PYTHON
+#define PYBIND_REGISTER(name, priority, define) PybindDefineRegisterer g_pybind_define_f_##name(#name, priority, define)
+#endif
+}  // namespace dataset
+}  // namespace mindspore
+#endif  // API_PYBIND_API_H_

mindspore/ccsrc/minddata/dataset/kernels/CMakeLists.txt

@@ -4,16 +4,16 @@ file(GLOB_RECURSE _CURRENT_SRC_FILES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "*.cc"
 set_property(SOURCE ${_CURRENT_SRC_FILES} PROPERTY COMPILE_DEFINITIONS SUBMODULE_ID=mindspore::SubModuleId::SM_MD)
 if (ENABLE_PYTHON)
     add_library(kernels OBJECT
-        compose_op.cc
-        random_apply_op.cc
-        random_choice_op.cc
+            data/compose_op.cc
+            data/random_apply_op.cc
+            data/random_choice_op.cc
         py_func_op.cc
         tensor_op.cc)
     target_include_directories(kernels PRIVATE ${pybind11_INCLUDE_DIRS})
 else()
     add_library(kernels OBJECT
-        compose_op.cc
-        random_apply_op.cc
-        random_choice_op.cc
+            data/compose_op.cc
+            data/random_apply_op.cc
+            data/random_choice_op.cc
         tensor_op.cc)
 endif()

mindspore/ccsrc/minddata/dataset/kernels/compose_op.cc → mindspore/ccsrc/minddata/dataset/kernels/data/compose_op.cc

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#include "minddata/dataset/kernels/compose_op.h"
+#include "minddata/dataset/kernels/data/compose_op.h"
 
 #include <vector>
 

mindspore/ccsrc/minddata/dataset/kernels/random_apply_op.cc → mindspore/ccsrc/minddata/dataset/kernels/data/random_apply_op.cc

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#include "minddata/dataset/kernels/random_apply_op.h"
+#include "minddata/dataset/kernels/data/random_apply_op.h"
 
 #include <memory>
 #include <vector>

mindspore/ccsrc/minddata/dataset/kernels/random_apply_op.h → mindspore/ccsrc/minddata/dataset/kernels/data/random_apply_op.h

@@ -24,7 +24,7 @@
 #include <vector>
 
 #include "minddata/dataset/core/tensor.h"
-#include "minddata/dataset/kernels/compose_op.h"
+#include "minddata/dataset/kernels/data/compose_op.h"
 #include "minddata/dataset/kernels/tensor_op.h"
 #include "minddata/dataset/util/random.h"
 

mindspore/ccsrc/minddata/dataset/kernels/random_choice_op.cc → mindspore/ccsrc/minddata/dataset/kernels/data/random_choice_op.cc

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#include "minddata/dataset/kernels/random_choice_op.h"
+#include "minddata/dataset/kernels/data/random_choice_op.h"
 
 #include <memory>
 #include <vector>

mindspore/ccsrc/minddata/dataset/kernels/random_choice_op.h → mindspore/ccsrc/minddata/dataset/kernels/data/random_choice_op.h

@@ -25,7 +25,7 @@
 
 #include "minddata/dataset/core/tensor.h"
 #include "minddata/dataset/kernels/tensor_op.h"
-#include "minddata/dataset/kernels/compose_op.h"
+#include "minddata/dataset/kernels/data/compose_op.h"
 #include "minddata/dataset/util/random.h"
 
 namespace mindspore {

mindspore/ccsrc/minddata/dataset/kernels/image/random_vertical_flip_with_bbox_op.h

@@ -29,7 +29,6 @@ namespace mindspore {
 namespace dataset {
 class RandomVerticalFlipWithBBoxOp : public TensorOp {
  public:
-  // Default values, also used by python_bindings.cc
   static const float kDefProbability;
   // Constructor for RandomVerticalFlipWithBBoxOp
   // @param probability: Probablity of Image flipping, 0.5 by default