select_prev_sibling

Source

def select_prev_sibling(self):
    ret = pyNodeList()
    for node in self:
        n = node.prev_all()
        if isinstance(n, pyNode):
            duplicated = False
            if len(ret) != 0:
                for r in ret:
                    if r == n:
                        duplicated = True
                        break
            if not duplicated: ret.append(n)
        else:
            for elem in n:
                duplicated = False
                if len(ret) != 0:
                    for r in ret:
                        if r == elem:
                            duplicated = True
                            break
                if not duplicated: ret.append(elem)
    if len(ret) == 1: return ret[0]
    else: return ret