(self)
return self._parent[:]
Returns the list of parent group indices for each group or C{None}
        if the given group is the root.
Returns the list of parent group indices for each group or C{None}
        if the given group is the root.
Returns the list of parent group indices for each group or C { None } if the given group is the root .
def parents(self):
        """Returns the list of parent group indices for each group or C{None}
        if the given group is the root."""
        return self._parent[:]
def parents ( self ) : return self . _parent [ : ]