BUG: fix fancy indexing with empty list by immerrr · Pull Request #6551 · pandas-dev/pandas (original) (raw)

I'm talking about names of the axes theirselves:

In [1]: pd.DataFrame(columns=pd.Series(list('abc'), name='foobar')) Out[1]: Empty DataFrame Columns: [a, b, c] Index: []

[0 rows x 3 columns]

In [2]: pd.DataFrame(np.arange(9).reshape(3,3), columns=pd.Series(list('abc'), name='foobar')) Out[2]: foobar a b c 0 0 1 2 1 3 4 5 2 6 7 8

[3 rows x 3 columns]

In [3]: _2.iloc[:,[]] Out[3]: Empty DataFrame Columns: [] Index: [0, 1, 2]

[3 rows x 0 columns]

In [4]: _2.iloc[:,[]].columns.names Out[4]: FrozenList([u'foobar'])

In [5]: _2.loc[:,[]].columns.names Out[5]: FrozenList([None])