def isdatelike(ds):
    ds = launder(ds)
    return ds == date_ or ds == datetime_
Compute data covariance with the generative model.
dataset/ETHPy150Open blaze/datashape/datashape/predicates.py/isdatelike--crossover with--dataset/ETHPy150Open scikit-learn/scikit-learn/sklearn/decomposition/base.py/_BasePCA.get_covariance