将字符串转换为字典 python

Posted 2023-02-23

【中文标题】将字符串转换为字典 python

【英文标题】：Converting a String into Dictionary python

【发布时间】：2013-03-13 19:57:05

【问题描述】：

我想要一本来自

的字典

 >>> page_detail_string = urllib2.urlopen("http://graph.facebook.com/Ideas4India").read()

它返回一个类似的字符串

>>> page_detail_string
'"about":"Ideas for development of India","category":"Community","description":"Platform where you can discuss and share your ideas which you think might help in betterment of our country.\\nPlease respect other community members and do not talk politics here.","is_published":true,"talking_about_count":0,"username":"Ideas4India","were_here_count":0,"id":"250014455083430","name":"Ideas 4 India","link":"http:\\/\\/www.facebook.com\\/Ideas4India","likes":23'

现在我想将它转换为字典，我可以通过使用 ast.literal_eval 轻松完成

>>> import ast
>>> dict_page = ast.literal_eval(page_detail_string)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/ast.py", line 80, in literal_eval
return _convert(node_or_string)
File "/usr/lib/python2.7/ast.py", line 63, in _convert
in zip(node.keys, node.values))
File "/usr/lib/python2.7/ast.py", line 62, in <genexpr>
return dict((_convert(k), _convert(v)) for k, v
File "/usr/lib/python2.7/ast.py", line 79, in _convert
raise ValueError('malformed string')

但我认为它会因为

而引发此错误

"is_published":true

有什么方法可以通过剥离上面的键和值（“is_published”：true）将其转换为字典。

谢谢

【参考方案1】：

你得到的是一个json字符串，你应该使用json.loads转换成dict

import json
json.loads(page_detail_string)

【参考方案2】：

使用json 模块

import json
json.loads(page_detail_string)

要了解有关json 模块的更多信息，请查看http://docs.python.org/2/library/json.html

【参考方案3】：

使用json module：

In [1]: s = '"about":"Ideas for development of India","category":"Community","description":"Platform where you can discuss and share your ideas which you think might help in betterment of our country.\\nPlease respect other community members and do not talk politics here.","is_published":true,"talking_about_count":0,"username":"Ideas4India","were_here_count":0,"id":"250014455083430","name":"Ideas 4 India","link":"http:\\/\\/www.facebook.com\\/Ideas4India","likes":23'

In [2]: import json

In [3]: json.loads(s)
Out[3]: 
u'about': u'Ideas for development of India',
 u'category': u'Community',
 u'description': u'Platform where you can discuss and share your ideas which you think might help in betterment of our country.\nPlease respect other community members and do not talk politics here.',
 u'id': u'250014455083430',
 u'is_published': True,
 u'likes': 23,
 u'link': u'http://www.facebook.com/Ideas4India',
 u'name': u'Ideas 4 India',
 u'talking_about_count': 0,
 u'username': u'Ideas4India',
 u'were_here_count': 0

另外，请注意您可以直接在文件对象上使用json.load（而不是json.loads）：

In [4]: import urllib2

In [5]: json.load(urllib2.urlopen("http://graph.facebook.com/Ideas4India"))
Out[5]: 
u'about': u'Ideas for development of India',
 u'category': u'Community',
 u'description': u'Platform where you can discuss and share your ideas which you think might help in betterment of our country.\nPlease respect other community members and do not talk politics here.',
 u'id': u'250014455083430',
 u'is_published': True,
 u'likes': 23,
 u'link': u'http://www.facebook.com/Ideas4India',
 u'name': u'Ideas 4 India',
 u'talking_about_count': 0,
 u'username': u'Ideas4India',
 u'were_here_count': 0