Question

我有这个json文件。部分内容如下：

{ "has_more" : false,
  "items" : [ { "aliases" : [ "http://www.stackoverflow.com" ],
        "api_site_parameter" : "stackoverflow",
        "markdown_extensions" : [ "Prettify" ],
        "name" : "Stack Overflow",
        "related_sites" : [ { "name" : "Stack Overflow Chat",
              "relation" : "chat",
              "site_url" : "http://chat.stackoverflow.com"
            } ],
        "site_state" : "normal",
        "site_type" : "main_site",
        "site_url" : "http://stackoverflow.com",
        "styling" : { "link_color" : "#0077CC",
            "tag_background_color" : "#E0EAF1",
            "tag_foreground_color" : "#3E6D8E"
          }
      },
      { "api_site_parameter" : "serverfault",
        "markdown_extensions" : [ "Prettify" ],
        "name" : "Server Fault",
        "related_sites" : [ { "api_site_parameter" : "meta.serverfault",
              "name" : "Meta Server Fault",
              "relation" : "meta",
              "site_url" : "http://meta.serverfault.com"
            },
            { "name" : "Chat Stack Exchange",
              "relation" : "chat",
              "site_url" : "http://chat.stackexchange.com"
            }
          ],
        "site_state" : "normal",
        "site_type" : "main_site",
        "site_url" : "http://serverfault.com",
        "styling" : { "link_color" : "#10456A",

我想匹配像

这样的字符串

        "related_sites" : [ { "name" : "Stack Overflow Chat",
              "relation" : "chat",
              "site_url" : "http://chat.stackoverflow.com"
            } ],

和

        "related_sites" : [ { "api_site_parameter" : "meta.serverfault",
              "name" : "Meta Server Fault",
              "relation" : "meta",
              "site_url" : "http://meta.serverfault.com"
            },
            { "name" : "Chat Stack Exchange",
              "relation" : "chat",
              "site_url" : "http://chat.stackexchange.com"
            }
          ],

没有启用多行。知道怎么做吗？

Answer 1

“启用多行”正是您匹配多行的方式。这就是为什么它被称为“多线”。但由于它所做的只是更改.以包含\n，您可以改为编写(.|\n)。

但鉴于这是JSON，为什么你在使用正则表达式呢？只需将其解析为数据结构并从那里开始工作。

data = json.loads(json_string)
for item in data['items']:
    print item['related_sites']

Answer 2

如果“related_sites”元素中没有数组，请尝试：

"related_sites" : \[(?:[^\]]*\n?)*\]

正则表达式匹配换行符

2 个答案: