def jackknife_indexes(data):
    """
Given data points data, where axis 0 is considered to delineate points, return
a list of arrays where each array is a set of jackknife indexes.

For a given set of data Y, the jackknife sample J[i] is defined as the data set
Y with the ith data point deleted.
    """
    base = np.arange(0,len(data))
    return (np.delete(base,i) for i in base)
Given data points data, where axis 0 is considered to delineate points, return
a list of arrays where each array is a set of jackknife indexes.

For a given set of data Y, the jackknife sample J[i] is defined as the data set
Y with the ith data point deleted.