parser.py 文件源码

def parse_dict(self):
        token = self.stream.expect('lbrace')
        items = []
        while self.stream.current.type != 'rbrace':
            if items:
                self.stream.expect('comma')
            if self.stream.current.type == 'rbrace':
                break
            key = self.parse_expression()
            self.stream.expect('colon')
            value = self.parse_expression()
            items.append(nodes.Pair(key, value, lineno=key.lineno))
        self.stream.expect('rbrace')
        return nodes.Dict(items, lineno=token.lineno)