missing import

Author: Zsailer

pandas_flavor/pandas_internals.py

@@ -3,6 +3,8 @@
     from pandas.api.extensions import (register_dataframe_accessor,
                                        register_series_accessor)
 except ImportError:
+    from pandas import DataFrame, Series
+
     try:
         from pandas.core.accessor import AccessorProperty
     except ImportError:  # Pandas before 0.22.0