from correlations import *
import correlations
__all__ = correlations.__all__

from cffilter import cslfilter as slfilter
__all__ += ['slfilter']

__all__ = []

import correlations
from correlations import *
__all__ += correlations.__all__

import cffilter
from cffilter import cslfilter as slfilter
__all__ += ['slfilter']

Fix import issue.