fix feed for new executor (#35803)

* fix feed, test=develop

* delete one test case, test=develop

python/paddle/fluid/executor.py

@@ -540,19 +540,24 @@ class _StandaloneExecutor(object):
         Returns:
             feed:(list|dict)  updated feed.
         """
-        global_block = self._main_program.global_block()
         if feed is None:
             feed = {}
-        elif isinstance(feed, dict):
+        elif isinstance(feed, (list, tuple)):
+            assert len(feed) == 1, "Not compiled with data parallel"
+            feed = feed[0]
+
+        if not isinstance(feed, dict):
+            raise TypeError(
+                "feed requires dict as its Parameter. But you passed in %s" %
+                (type(feed)))
+
+        global_block = self._main_program.global_block()
         for feed_name in list(feed.keys()):
             if not global_block.has_var(feed_name):
                 feed.pop(feed_name)
                 warnings.warn(
                     "The variable %s is not found in program. It is not declared or is pruned."
                     % feed_name)
-        else:
-            raise TypeError("Only support feed with `dict`, but received {}".
-                            format(type(feed).__name__))
 
         return feed
 

python/paddle/fluid/tests/unittests/interpreter/test_standalone_executor.py

@@ -242,9 +242,6 @@ class SwitchExecutorInterfaceWithFeed(unittest.TestCase):
     def test_with_error(self):
         feed = [{'a': np.ones([2, 2], dtype="float32")}]
 
-        with self.assertRaises(TypeError):
-            res = self.run_new_executor(feed)
-
         with self.assertRaises(TypeError):
             os.environ['FLAGS_USE_STANDALONE_EXECUTOR'] = '1'
             self._run(feed[0], add_wrong_fetch=True)