[PIR] Add state_dict to program_patch to enable default paramater (#70377)

* add state_dict to program_patch

* fix

Author: changeyoung98

paddle/fluid/pybind/pir.cc

@@ -594,7 +594,7 @@ void BindProgram(py::module *m) {
            })
       .def("num_ops", [](Program &self) { return self.num_ops(); })
       .def(
-          "state_dict",
+          "_state_dict",
           [](std::shared_ptr<Program> self,
              const std::string &mode = "all",
              const framework::Scope &scope = framework::Scope()) {

python/paddle/pir/program_patch.py

@@ -27,8 +27,22 @@ def _lr_schedule_guard(self, is_with_opt=False):
         # be fixed in the future.
         yield
 
+    def state_dict(self, mode="all", scope=None):
+        from paddle.base import core
+        from paddle.base.executor import global_scope
+
+        if scope is not None and not isinstance(scope, core._Scope):
+            raise TypeError(
+                f"`scope` should be None or `paddle.static.Scope'` type, but received {type(scope)}."
+            )
+
+        if scope is None:
+            scope = global_scope()
+        return self._state_dict(mode, scope)
+
     program_attrs = {
         "_lr_schedule_guard": _lr_schedule_guard,
+        "state_dict": state_dict,
     }
 
     global _already_patch_program