def find_all(im_source, im_search, maxcnt=0):
    '''
    优先Template，之后Sift
    @ return [(x,y), ...]
    '''
    result = find_all_template(im_source, im_search, maxcnt=maxcnt)
    if not result:
        result = find_all_sift(im_source, im_search, maxcnt=maxcnt)
    if not result:
        return []
    return [match["result"] for match in result]
def find_all ( im_source , im_search , maxcnt = 0 ) : result = find_all_template ( im_source , im_search , maxcnt = maxcnt ) if not result : result = find_all_sift ( im_source , im_search , maxcnt = maxcnt ) if not result : return [ ] return [ match [ "result" ] for match in result ]
优先Template，之后Sift
    @ return [(x,y), ...]