Question

我想从嵌套在列表中的字典中打印出每个键值对。所以我正在与之合作：

[{"updated_at":"2011/09/26 22:39:18 +0000","url":"http://diveintopython.net/http_web_services/redirects.html","annotations":[],"user":"name","shared":"yes","tags":"python,handler,opener,urllib2","readlater":"no","created_at":"2011/09/26 22:39:18 +0000","title":"11.7.\xc2\xa0Handling redirects","comments":[],"desc":""},{"updated_at":"2011/09/26 11:09:07 +0000","url":"http://www.polimex.net/sklep/index.php?page=Category&catid=7","annotations":[],"user":"name","shared":"yes","tags":"plastic,snap,buttons,clothing","readlater":"no","created_at":"2011/09/26 11:05:48 +0000","title":"Polimex - Plastic\xc2\xa0accessories","comments":[],"desc":""}]

当我这样做时

from pprint import pprint

data = [{"updated_at":"2011/09/26 22:39:18 +0000","url":"http://diveintopython.net/http_web_services/redirects.html","annotations":[],"user":"name","shared":"yes","tags":"python,handler,opener,urllib2","readlater":"no","created_at":"2011/09/26 22:39:18 +0000","title":"11.7.\xc2\xa0Handling redirects","comments":[],"desc":""},{"updated_at":"2011/09/26 11:09:07 +0000","url":"http://www.polimex.net/sklep/index.php?page=Category&catid=7","annotations":[],"user":"name","shared":"yes","tags":"plastic,snap,buttons,clothing","readlater":"no","created_at":"2011/09/26 11:05:48 +0000","title":"Polimex - Plastic\xc2\xa0accessories","comments":[],"desc":""}]

pprint(data)

我得到的结果与原始列表相同，但是在字符串中

'[{"updated_at":"2011/09/26 22:39:18 +0000","url":"http://diveintopython.net/http_web_services/redirects.html","annotations":[],"user":"name","shared":"yes","tags":"python,handler,opener,urllib2","readlater":"no","created_at":"2011/09/26 22:39:18 +0000","title":"11.7.\xc2\xa0Handling redirects","comments":[],"desc":""},{"updated_at":"2011/09/26 11:09:07 +0000","url":"http://www.polimex.net/sklep/index.php?page=Category&catid=7","annotations":[],"user":"name","shared":"yes","tags":"plastic,snap,buttons,clothing","readlater":"no","created_at":"2011/09/26 11:05:48 +0000","title":"Polimex - Plastic\xc2\xa0accessories","comments":[],"desc":""}]'

如何使数据打印出来看起来像这样？

[
    {
     "updated_at":"2011/09/26 22:39:18 +0000",
     "url":"http://diveintopython.net/http_web_services/redirects.html",
     "annotations":[],
     "user":"name",
     "shared":"yes",
     "tags":"python,handler,opener,urllib2",
     "readlater":"no",
     "created_at":"2011/09/26 22:39:18 +0000",
     "title":"11.7.\xc2\xa0Handling redirects",
     "comments":[],
     "desc":""
     },
     {
     "updated_at":"2011/09/26 11:09:07 +0000",
     "url":"http://www.polimex.net/sklep/index.php?page=Category&catid=7",
     "annotations":[],
     "user":"name",
     "shared":"yes",
     "tags":"plastic,snap,buttons,clothing",
     "readlater":"no",
     "created_at":"2011/09/26 11:05:48 +0000", 
     "title":"Polimex - Plastic\xc2\xa0accessories", 
     "comments":[],"desc":"" 
     }
]

Answer 1

一种可能性浮现在脑海中。您是否向pprint提供了JSON字符串？如果是这样，你应该先解码它：

pprint(json.loads(data))

Answer 2

它...适合我。（我剪切并粘贴了你的例子！）你使用的是什么Python和OS？你确定你不小心在某处添加了一些额外的引用吗？

您要打印到终端吗？

如何使用Python的pprint模块打印出嵌套在列表中的字典键值对？

2 个答案: