transformer.py 文件源码

def com_argument(self, nodelist, kw, star_node):
        if len(nodelist) == 3 and nodelist[2][0] == symbol.comp_for:
            test = self.com_node(nodelist[1])
            return 0, self.com_generator_expression(test, nodelist[2])
        if len(nodelist) == 2:
            if kw:
                raise SyntaxError, "non-keyword arg after keyword arg"
            if star_node:
                raise SyntaxError, "only named arguments may follow *expression"
            return 0, self.com_node(nodelist[1])
        result = self.com_node(nodelist[3])
        n = nodelist[1]
        while len(n) == 2 and n[0] != token.NAME:
            n = n[1]
        if n[0] != token.NAME:
            raise SyntaxError, "keyword can't be an expression (%s)"%n[0]
        node = Keyword(n[1], result, lineno=n[2])
        return 1, node