replace tabs with spaces

Author: ruidc

pandas/io/parsers.py

@@ -1017,8 +1017,8 @@ def _parse_xls(self, sheetname, header=0, skiprows=None, index_col=None,
                         value = time(*dt[3:])
                     else:
                         value = datetime(*dt)
-				if typ == XL_CELL_ERROR:
-					value = np.nan
+                if typ == XL_CELL_ERROR:
+                    value = np.nan
                 row.append(value)
             data.append(row)
 

pandas/io/tests/test_parsers.py

@@ -376,8 +376,8 @@ def test_excel_stop_iterator(self):
         parsed = excel_data.parse('Sheet1')
         expected = DataFrame([['aaaa','bbbbb']], columns=['Test', 'Test1'])
         assert_frame_equal(parsed, expected)
-		
-	def test_excel_cell_error_na(self):
+        
+    def test_excel_cell_error_na(self):
         try:
             import xlrd
         except ImportError: