add remove_var from c++ end

paddle/fluid/framework/block_desc.h

@@ -17,6 +17,7 @@ limitations under the License. */
 #include <deque>
 #include <memory>
 #include <set>
+#include <string>
 #include <unordered_map>
 #include <vector>
 
@@ -96,6 +97,8 @@ class BlockDesc {
    */
   void RemoveOp(size_t s, size_t e);
 
+  void RemoveVar(const std::string &name) { vars_.erase(name); }
+
   std::vector<OpDesc *> AllOps() const;
 
   size_t OpSize() const { return ops_.size(); }

paddle/fluid/pybind/protobuf.cc

@@ -15,6 +15,8 @@ limitations under the License. */
 #include "paddle/fluid/pybind/protobuf.h"
 #include <deque>
 #include <iostream>
+#include <string>
+#include <tuple>
 #include "paddle/fluid/framework/backward.h"
 #include "paddle/fluid/framework/block_desc.h"
 #include "paddle/fluid/framework/op_desc.h"
@@ -98,7 +100,7 @@ namespace pybind {
 using namespace paddle::framework;  // NOLINT
 
 template <typename T>
-static py::bytes SerializeMessage(T &self) {
+static py::bytes SerializeMessage(T &self) {  // NOLINT
   // Check IsInitialized in Python
   std::string retv;
   PADDLE_ENFORCE(self.Proto()->SerializePartialToString(&retv),
@@ -107,7 +109,7 @@ static py::bytes SerializeMessage(T &self) {
 }
 
 // Bind Methods
-void BindProgramDesc(py::module &m) {
+void BindProgramDesc(py::module &m) {  // NOLINT
   py::class_<ProgramDesc>(m, "ProgramDesc", "")
       .def(py::init<>())
       .def("__init__",
@@ -151,7 +153,7 @@ void BindProgramDesc(py::module &m) {
            });
 }
 
-void BindBlockDesc(py::module &m) {
+void BindBlockDesc(py::module &m) {  // NOLINT
   py::class_<BlockDesc>(m, "BlockDesc", "")
       .def_property_readonly("id", &BlockDesc::ID)
       .def_property_readonly("parent", &BlockDesc::Parent)
@@ -200,13 +202,19 @@ void BindBlockDesc(py::module &m) {
              return self.FindVarRecursive(name);
            },
            py::return_value_policy::reference)
+      .def("remove_var",
+           [](BlockDesc &self, py::bytes byte_name) {
+             std::string name = byte_name;
+             return self.RemoveVar(name);
+           },
+           py::return_value_policy::reference)
       .def("all_vars", &BlockDesc::AllVars, py::return_value_policy::reference)
       .def("op_size", &BlockDesc::OpSize)
       .def("op", &BlockDesc::Op, py::return_value_policy::reference)
       .def("serialize_to_string", SerializeMessage<BlockDesc>);
 }
 
-void BindVarDsec(py::module &m) {
+void BindVarDsec(py::module &m) {  // NOLINT
   py::class_<VarDesc> var_desc(m, "VarDesc", "");
   var_desc
       .def("name",
@@ -257,7 +265,7 @@ void BindVarDsec(py::module &m) {
       .value("RAW", proto::VarType::RAW);
 }
 
-void BindOpDesc(py::module &m) {
+void BindOpDesc(py::module &m) {  // NOLINT
   py::enum_<proto::AttrType>(m, "AttrType", "")
       .value("INT", proto::AttrType::INT)
       .value("INTS", proto::AttrType::INTS)

python/paddle/fluid/tests/unittests/test_protobuf_descs.py

@@ -19,9 +19,9 @@ from paddle.fluid.framework import Program
 
 class TestOpDesc(unittest.TestCase):
     def test_op_desc(self):
-        prog = core.ProgramDesc()
-        self.assertIsNotNone(prog)
-        block = prog.block(0)
+        program_desc = core.ProgramDesc()
+        self.assertIsNotNone(program_desc)
+        block = program_desc.block(0)
         self.assertIsNotNone(block)
         op = block.append_op()
         self.assertIsNotNone(op)
@@ -67,7 +67,7 @@ class TestOpDesc(unittest.TestCase):
 
         self.assertEqual(8, len(op.attr_names()))
 
-        op.set_block_attr("block_attr", prog.block(0))
+        op.set_block_attr("block_attr", program_desc.block(0))
         self.assertEqual(0, op.block_attr("block_attr"))
 
         mul_op = block.append_op()
@@ -88,20 +88,20 @@ class TestProgramDesc(unittest.TestCase):
         del program_desc
 
     def test_append_block(self):
-        prog_desc = core.ProgramDesc()
-        self.assertIsNotNone(prog_desc)
-        block_root = prog_desc.block(0)
+        program_desc = core.ProgramDesc()
+        self.assertIsNotNone(program_desc)
+        block_root = program_desc.block(0)
         self.assertIsNotNone(block_root)
         self.assertEqual(block_root.id, 0)
-        block1 = prog_desc.append_block(block_root)
-        block2 = prog_desc.append_block(block1)
+        block1 = program_desc.append_block(block_root)
+        block2 = program_desc.append_block(block1)
         self.assertIsNotNone(block1)
         self.assertEqual(block1.id, block2.parent)
         self.assertEqual(block_root.id, block1.parent)
-        block3 = prog_desc.append_block(block_root)
+        block3 = program_desc.append_block(block_root)
         self.assertEqual(block3.parent, block_root.id)
-        self.assertEqual(prog_desc.block(1).id, 1)
-        self.assertEqual(4, prog_desc.num_blocks())
+        self.assertEqual(program_desc.block(1).id, 1)
+        self.assertEqual(4, program_desc.num_blocks())
 
 
 class TestVarDesc(unittest.TestCase):
@@ -162,9 +162,9 @@ class TestVarDesc(unittest.TestCase):
 
 class TestBlockDesc(unittest.TestCase):
     def test_add_var(self):
-        prog = core.ProgramDesc()
-        self.assertIsNotNone(prog)
-        block = prog.block(0)
+        program_desc = core.ProgramDesc()
+        self.assertIsNotNone(program_desc)
+        block = program_desc.block(0)
         self.assertIsNotNone(block)
         var1 = block.var("var1")
         var2 = block.var("var2")
@@ -175,9 +175,9 @@ class TestBlockDesc(unittest.TestCase):
         self.assertEqual(var2_re, var2)
 
     def test_add_op(self):
-        prog = core.ProgramDesc()
-        self.assertIsNotNone(prog)
-        block = prog.block(0)
+        program_desc = core.ProgramDesc()
+        self.assertIsNotNone(program_desc)
+        block = program_desc.block(0)
         self.assertIsNotNone(block)
         op1 = block.append_op()
         op2 = block.append_op()
@@ -189,9 +189,9 @@ class TestBlockDesc(unittest.TestCase):
 
     def test_remove_op(self):
         program = Program()
-        prog = program.desc
-        self.assertIsNotNone(prog)
-        block = prog.block(0)
+        program_desc = program.desc
+        self.assertIsNotNone(program_desc)
+        block = program_desc.block(0)
         self.assertIsNotNone(block)
 
         op0 = block.append_op()