Add sheet_names property to ExcelFile, with tests

Author: Dieter Vandenbussche

pandas/io/parsers.py

@@ -669,6 +669,14 @@ def _parse_xls(self, sheetname, header=0, skiprows=None, index_col=None,
 
         return parser.get_chunk()
 
+    @property
+    def sheet_names(self):
+        if self.use_xlsx:
+            return self.book.get_sheet_names()
+        else:
+            return self.book.sheet_names()
+
+
 def _trim_excel_header(row):
     # trim header row so auto-index inference works
     while len(row) > 0 and row[0] == '':

pandas/tests/test_frame.py

@@ -2352,6 +2352,10 @@ def test_to_excel_from_excel(self):
             assert_frame_equal(self.frame, recons)
             recons = reader.parse('test2',index_col=0)
             assert_frame_equal(self.tsframe, recons)
+            np.testing.assert_equal(2, len(reader.sheet_names))
+            np.testing.assert_equal('test1', reader.sheet_names[0])
+            np.testing.assert_equal('test2', reader.sheet_names[1])
+
 
             os.remove(path)