Placeholder for DataFrame in pd.query

Question

I use pd.query and pd.eval a lot. However, sometimes I find myself in situations where I would like to filter an unnamed DataFrame with pd.query and it would be very handy if I could use a name for the DataFrame in the query expression. For sake of an example, consider this DataFrame:

>>> df = pd.DataFrame(
        data=np.arange(20).reshape(5, 4),
        columns=pd.MultiIndex.from_product([['A', 'B'], ['x', 'y']]))
>>> df
    A       B    
    x   y   x   y
0   0   1   2   3
1   4   5   6   7
2   8   9  10  11
3  12  13  14  15
4  16  17  18  19

Now, to get the y columns with values above 15 it would feel natural for me to try something like

df.loc[:, (slice(None), 'y')].query('(PLACEHOLDER > 15).any(1)')

My question is: Is there such a placeholder to refer to the DataFrame, on which query has been called, for use in the expression? This would save me a lot of typing in many situations.