不可分类型：'dict'类型错误 [英] unhashable type: 'dict' Type Error

问题描述

假设我有这个字典：

  items = {1：{'title'：u'testing123'，'description '：u'testing456'}，
 2：{'description'：u'testing123'，'description'：u'testing456'}，
 3：{'description'：u'testing123' 'description'：u'testing456'}，
 4：{'description'：u'testing123'，'description'：u'testing456'}，
 5：{'description'：u'testing123 '，'description'：u'testing456'}，
 6：{'description'：u'somethingelse'，'description'：u'somethingelse'}} 
  / pre> 
 
 
我想过滤掉重复的值，所以最终我会得到
  {1：{'title'：u'testing123'，'description'：u'testing456'}，6：{'title'：u'something'，'description'我写了这段代码：
 
 
 
 
 
 
 $ $ $ $ 
 
为key，value.items（）中的值：
如果没有设置（value.values（））。issubset（set（dic.values（）））
 dic [key] = value 
  / pre> 
 
 
但是，我收到错误消息 TypeError：unhashable type：'dict'。我不知道为什么会发生这种情况，以及如何解决这个问题。 
 
 
 
这是灵感来自于另一个问题和我尝试解决的失败。 
解决方案
 dic.values（）返回列表
 >>>对于键，在items.items（）中的值：
 ... print dic.values（）
 ... 
 [{'description'：u'testing456'，'title'： u'testing123'}] 
 [{'description'：u'testing456'，'title'：u'testing123'}] 
 [{'description'：u'testing456'，'title' u'testing123'}] 
 [{'description'：u'testing456'，'title'：u'testing123'}] 
 [{'description'：u'testing456'，'title' u'testing123'}] 
 [{'description'：u'testing456'，'title'：u'testing123'}] 
>>> 
  
所以，您不能将dict设置为dict，因为dict不可哈希。
 
 
 
您可以通过以下方式修复：
 >>> dic = {} 
>>>>对于key.items（）中的键值：
 ...如果没有设置（value.values（））。issubset（set（sum（[x.values（）for x in dic.values（）] ，[]）））：
 ... dic [key] = value 
 ... 
>>> dic 
 {1：{'description'：u'testing456'，'title'：u'testing123'}，6：{'description'：u'somethingelse'，'title'：u'somethingelse'}} 
>>> 
  
对于python> 3.x 
 如果没有设置（value.values（））。issubset（set（sum（[list（x.values（））for x in list（dic.values（））]，[] ）））：
  
 
Suppose I have this dictionary:
items = {1: {'title': u'testing123', 'description': u'testing456'},
2: {'description': u'testing123', 'description': u'testing456'},
3: {'description': u'testing123', 'description': u'testing456'},
4: {'description': u'testing123', 'description': u'testing456'},
5: {'description': u'testing123', 'description': u'testing456'},
6: {'description': u'somethingelse', 'description': u'somethingelse'}}
I want to filter out the duplicate values, so that in the end I'd get 
{1: {'title': u'testing123', 'description': u'testing456'}, 6: {'title': u'something', 'description': u'somethingelse'}}
I wrote this code:
dic = {}

for key, value in items.items():
    if not set(value.values()).issubset(set(dic.values())):
        dic[key] = value
however I get the error message TypeError: unhashable type: 'dict'. I am not sure why this happens and how to fix it. 

This is inspired by another question and my failed attempt to solve it. 
解决方案
dic.values() return list of dict
>>> for key, value in items.items():
...     print dic.values()
...
[{'description': u'testing456', 'title': u'testing123'}]
[{'description': u'testing456', 'title': u'testing123'}]
[{'description': u'testing456', 'title': u'testing123'}]
[{'description': u'testing456', 'title': u'testing123'}]
[{'description': u'testing456', 'title': u'testing123'}]
[{'description': u'testing456', 'title': u'testing123'}]
>>>
So, you can't apply set on dict as dict is not hashable.

Btw you can fix it by:
>>> dic = {}
>>> for key, value in items.items():
...     if not set(value.values()).issubset(set(sum([x.values() for x in dic.values()],[]))):
...         dic[key] = value
...
>>> dic
{1: {'description': u'testing456', 'title': u'testing123'}, 6: {'description':     u'somethingelse', 'title': u'somethingelse'}}
>>>
For python > 3.x
if not set(value.values()).issubset(set(sum([list(x.values()) for x in list(dic.values())],[]))):


                        
这篇关于不可分类型：'dict'类型错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！