transformer.py 文件源码

def import_from(self, nodelist):
        # import_from: 'from' ('.'* dotted_name | '.') 'import' ('*' |
        #    '(' import_as_names ')' | import_as_names)
        assert nodelist[0][1] == 'from'
        idx = 1
        while nodelist[idx][1] == '.':
            idx += 1
        level = idx - 1
        if nodelist[idx][0] == symbol.dotted_name:
            fromname = self.com_dotted_name(nodelist[idx])
            idx += 1
        else:
            fromname = ""
        assert nodelist[idx][1] == 'import'
        if nodelist[idx + 1][0] == token.STAR:
            return From(fromname, [('*', None)], level,
                        lineno=nodelist[0][2])
        else:
            node = nodelist[idx + 1 + (nodelist[idx + 1][0] == token.LPAR)]
            return From(fromname, self.com_import_as_names(node), level,
                        lineno=nodelist[0][2])