diff -r 754fcc099834 Lib/test/test_structseq.py
--- a/Lib/test/test_structseq.py	Mon May 26 00:14:14 2014 -0700
+++ b/Lib/test/test_structseq.py	Mon May 26 15:28:41 2014 +0530
@@ -81,6 +81,10 @@
         self.assertEqual(len(t), t.n_sequence_fields)
         self.assertEqual(t.n_unnamed_fields, 0)
         self.assertEqual(t.n_fields, time._STRUCT_TM_ITEMS)
+        # Issue 1820: Match namedtuple API
+        _fields = ('tm_year', 'tm_mon', 'tm_mday', 'tm_hour', 'tm_min', 
+                  'tm_sec', 'tm_wday', 'tm_yday', 'tm_isdst')
+        self.assertEqual(t._fields, _fields)
 
     def test_constructor(self):
         t = time.struct_time
diff -r 754fcc099834 Objects/structseq.c
--- a/Objects/structseq.c	Mon May 26 00:14:14 2014 -0700
+++ b/Objects/structseq.c	Mon May 26 15:28:41 2014 +0530
@@ -7,6 +7,7 @@
 static char visible_length_key[] = "n_sequence_fields";
 static char real_length_key[] = "n_fields";
 static char unnamed_fields_key[] = "n_unnamed_fields";
+static char _fields_key[] = "_fields";
 
 /* Fields with this name have only a field index, not a field name.
    They are only allowed for indices < n_visible_fields. */
@@ -14,6 +15,7 @@
 _Py_IDENTIFIER(n_sequence_fields);
 _Py_IDENTIFIER(n_fields);
 _Py_IDENTIFIER(n_unnamed_fields);
+_Py_IDENTIFIER(_fields);
 
 #define VISIBLE_SIZE(op) Py_SIZE(op)
 #define VISIBLE_SIZE_TP(tp) PyLong_AsLong( \
@@ -326,7 +328,7 @@
     PyObject *dict;
     PyMemberDef* members;
     int n_members, n_unnamed_members, i, k;
-    PyObject *v;
+    PyObject *v, *_fields;
 
 #ifdef Py_TRACE_REFS
     /* if the type object was chained, unchain it first
@@ -347,6 +349,13 @@
     type->tp_name = desc->name;
     type->tp_doc = desc->doc;
 
+    /* _fields only has the visible named keys*/
+    _fields = PyTuple_New(desc->n_in_sequence - n_unnamed_members);
+    if (_fields == NULL) {
+        PyErr_NoMemory();
+        return -1;
+    }
+
     members = PyMem_NEW(PyMemberDef, n_members-n_unnamed_members+1);
     if (members == NULL) {
         PyErr_NoMemory();
@@ -357,6 +366,12 @@
         if (desc->fields[i].name == PyStructSequence_UnnamedField)
             continue;
         members[k].name = desc->fields[i].name;
+        if (i < desc->n_in_sequence) {
+            PyObject *field_name;
+            field_name = PyUnicode_FromString(members[k].name);
+            Py_INCREF(field_name);
+            PyTuple_SET_ITEM(_fields, k, field_name);
+        }
         members[k].type = T_OBJECT;
         members[k].offset = offsetof(PyStructSequence, ob_item)
           + i * sizeof(PyObject*);
@@ -388,6 +403,11 @@
     SET_DICT_FROM_INT(visible_length_key, desc->n_in_sequence);
     SET_DICT_FROM_INT(real_length_key, n_members);
     SET_DICT_FROM_INT(unnamed_fields_key, n_unnamed_members);
+    if (PyDict_SetItemString(dict, _fields_key, _fields) < 0) {
+        Py_DECREF(_fields);
+        return -1;
+    }
+    Py_DECREF(_fields);
 
     return 0;
 }
@@ -417,7 +437,8 @@
 {
     if (_PyUnicode_FromId(&PyId_n_sequence_fields) == NULL
         || _PyUnicode_FromId(&PyId_n_fields) == NULL
-        || _PyUnicode_FromId(&PyId_n_unnamed_fields) == NULL)
+        || _PyUnicode_FromId(&PyId_n_unnamed_fields) == NULL
+        || _PyUnicode_FromId(&PyId__fields) == NULL)
         return -1;
 
     return 0;