diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/convert_call_func.py b/python/paddle/fluid/dygraph/dygraph_to_static/convert_call_func.py
index 5aa0ffb3e4da5b2ef53dbcd6149f9e714cb2aa48..1532d5be3775309b2eb9062ecac144a7847a6ab8 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/convert_call_func.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/convert_call_func.py
@@ -102,7 +102,10 @@ def convert_call(func):
         if func.__name__ == '<lambda>':
             return func
         try:
-            if func in func.__globals__.values():
+            global_funcs = set([
+                fn for fn in func.__globals__.values() if inspect.isfunction(fn)
+            ])
+            if func in global_funcs:
                 converted_call = to_static_func(func)
                 func_self = getattr(func, '__self__', None)
         except AttributeError:
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/program_translator.py b/python/paddle/fluid/dygraph/dygraph_to_static/program_translator.py
index f480df8a6fdd898b95bf2122cee6cff62b3166a8..db7d59096f902dfb47a168a628442f4ca86f32e6 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/program_translator.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/program_translator.py
@@ -368,9 +368,10 @@ class ProgramTranslator(object):
 
                 prog_trans = fluid.dygraph.ProgramTranslator()
 
-                x = np.ones([1, 2])
-                x_v = prog_trans.get_output(func, x)
-                print(x_v.numpy()) # [[0. 0.]]
+                with fluid.dygraph.guard():
+                    x = np.ones([1, 2])
+                    x_v = prog_trans.get_output(func, x)
+                    print(x_v.numpy()) # [[0. 0.]]
 
         """
         assert callable(
@@ -472,7 +473,7 @@ class ProgramTranslator(object):
                 x = np.ones([1, 2])
                 main_prog, start_prog, inputs, outputs = prog_trans.get_program(func, x)
                 print([i.name for i in inputs])
-                # ['x_0'] the feed input variable name representing x
+                # ['feed_0'] the feed input variable name representing x
                 print([o.name for o in outputs])
                 # ['_generated_var_4'] the fetch output variable name representing x_v        
 
@@ -573,6 +574,7 @@ class ProgramTranslator(object):
                 import numpy as np
                 import paddle.fluid as fluid
                 from paddle.fluid.dygraph import Linear
+                from paddle.fluid.dygraph import declarative
                 from paddle.fluid.dygraph import ProgramTranslator
 
                 class SimpleNet(fluid.dygraph.Layer):