'numpy.float64' object has no attribute 'values'

[none2003]

stats.py - > omega, around line 566:

    numer = returns_less_thresh[returns_less_thresh > 0.0].sum().values[0]
    denom = -1.0 * returns_less_thresh[returns_less_thresh < 0.0].sum().values[0]

The result of "returns_less_thresh[returns_less_thresh > 0.0].sum()" is a type of numpy.float64, and has no attribute 'values'.