def ones(shape, dtype=_FLOATX, name=None):
    return variable(np.ones(shape), dtype, name)
add in numeric unary methods
dataset/ETHPy150Open fchollet/keras/keras/backend/tensorflow_backend.py/ones--crossover with--dataset/ETHPy150Open pydata/pandas/pandas/indexes/base.py/Index._add_numeric_methods_unary