(conds)
return wv1
[ [wc, wo, wv],
      [wc, wo, wv], ...
    ]
[ [wc, wo, wv],
      [wc, wo, wv], ...
    ]
[ [ wc wo wv ] [ wc wo wv ] ... ]
def get_wv1(conds):
    """
    [ [wc, wo, wv],
      [wc, wo, wv], ...
    ]
    """
    wv1 = []
    for cond in conds:
        wv1.append(cond[2])
    return wv1
def get_wv1 ( conds ) : wv1 = [ ] for cond in conds : wv1 . append ( cond [ 2 ] ) return wv1