BUG: fixed DataFrame.to_records() error with datetime64, #1908

Author: svaksha

pandas/core/frame.py

@@ -1066,8 +1066,11 @@ def to_records(self, index=True):
         y : recarray
         """
         if index:
-            arrays = [self.index.values] + [self[c].values
-                                            for c in self.columns]
+            if (com.is_datetime64_dtype(self.index)):
+                arrays = [self.index.asobject.values] + [self[c].values for c in self.columns]
+            else:
+                arrays = [self.index.values] + [self[c].values for c in self.columns]
+
             count = 0
             index_names = self.index.names
             if isinstance(self.index, MultiIndex):

pandas/tests/test_frame.py

@@ -2668,6 +2668,11 @@ def test_to_json_except(self):
         df = DataFrame([1, 2, 3])
         self.assertRaises(ValueError, df.to_json, orient="garbage")
 
+    def test_array_index_asobject(self):
+        df = DataFrame([["one", "two", "three"], ["four", "five", "six"]], index=pan.date_range("2012-01-01", "2012-01-02"))
+        self.assert_(df.to_records()['index'][0] == df.index[0])
+
+
     def test_from_records_to_records(self):
         # from numpy documentation
         arr = np.zeros((2,),dtype=('i4,f4,a10'))