无法在Python中执行点

Question

大家好，我在python上遇到了这个问题，我已经尝试解决了这个问题，请在这里将问题发布在我们的主题中。

select a.*,
       ( select value from b where b.a_id = a.id and b.key = 'looks' ) as looks,
       ( select value from b where b.a_id = a.id and b.key = 'lazy' ) as lazy,
       ( select value from b where b.a_id = a.id and b.key = 'car' ) as car,
       ( select value from b where b.a_id = a.id and b.key = 'email' ) as email
  from a
 where a.id = 1;

Answer 1

您必须安装graphviz才能正常工作，不仅是Python软件包，还有二进制发行版。

请参见https://www.graphviz.org/

然后，您必须在PATH环境变量中放置要点的路径。