"df.get(None)" throws error in 0.13 -> regression? #5652
Description
This works with pandas 0.12:
from ggplot import meat
meat.get(None)
[returns None]But throws an error in 0.13 (RC):
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
<ipython-input-11-86be6a7317b8> in <module>()
----> 1 meat.get(None)
C:\portabel\Python27\lib\site-packages\pandas\core\generic.pyc in get(self, key, default)
961 """
962 try:
--> 963 return self[key]
964 except KeyError:
965 return default
C:\portabel\Python27\lib\site-packages\pandas\core\frame.pyc in __getitem__(self, key)
1626 return self._getitem_multilevel(key)
1627 else:
-> 1628 return self._getitem_column(key)
1629
1630 def _getitem_column(self, key):
C:\portabel\Python27\lib\site-packages\pandas\core\frame.pyc in _getitem_column(self, key)
1633 # get column
1634 if self.columns.is_unique:
-> 1635 return self._get_item_cache(key)
1636
1637 # duplicate columns & possible reduce dimensionaility
C:\portabel\Python27\lib\site-packages\pandas\core\generic.pyc in _get_item_cache(self, item)
972 res = cache.get(item)
973 if res is None:
--> 974 values = self._data.get(item)
975 res = self._box_item_values(item, values)
976 cache[item] = res
C:\portabel\Python27\lib\site-packages\pandas\core\internals.pyc in get(self, item)
2737 if isnull(item):
2738 indexer = np.arange(len(self.items))[isnull(self.items)]
-> 2739 return self.get_for_nan_indexer(indexer)
2740
2741 _, block = self._find_block(item)
C:\portabel\Python27\lib\site-packages\pandas\core\internals.pyc in get_for_nan_indexer(self, indexer)
2789 indexer = indexer.item()
2790 else:
-> 2791 raise ValueError("cannot label index with a null key")
2792
2793 # take a nan indexer and return the values
ValueError: cannot label index with a null keyNot sure if that is intentional as this broke some code in the facet_wrap in ggplot (which now will get some update against this :-) )