def _get_join_freq(self, other):
    '\n        Get the freq to attach to the result of a join operation.\n        '
    freq = None
    if self._can_fast_union(other):
        freq = self.freq
    return freq
Get the freq to attach to the result of a join operation.
def _get_join_freq(self, other):
    '\n        \n        '
    freq = None
    if self._can_fast_union(other):
        freq = self.freq
    return freq