[Tutor] Remove duplicate values from dictionary without removing key

[Umar Draz]

Hi Alan

I have changed the function and now it is working as I want

*def** remove_duplicate_values*(dict_list):

    seen = {}

    *for* key *in* dict_list[0].keys():

        seen[key] = []


    *for* dic *in* dict_list:

        *for* field,value *in* dic.items():

            *if* field == *'client'*:

              *if* value *in* seen[field]:

                 dic[field] = ""

              *else*: seen[field].append(value)

    *return* dict_list



Thanks for your help

On Fri, Jan 8, 2021 at 7:03 PM Umar Draz <unix.co at gmail.com> wrote:

> Hi Alan
>
> The function you gave me worked but it has a little issue, here is the code
>
> from pprint import pprint
>
>
> def remove_duplicate_values(dict_list):
>
>     seen = {}
>
>     for key in dict_list[0].keys():
>
>         seen[key] = []
>
>
>     for dic in dict_list:
>
>         for field,value in dic.items():
>
>             if value in seen[field]:
>
>                dic[field] = ""
>
>             else: seen[field].append(value)
>
>     return dict_list
>
>
> items = [
>
>     {'client': 'xyz', 'name': "Ilir Meta", 'rating': 0.06, 'total': 100},
>
>     {'client': 'xyz','name': "Abdelmadjid Tebboune", 'rating': 4.0,
> 'total': 100},
>
>     {'client': 'xyz','name': "Alexander Lukashenko", 'rating': 3.1,
> 'total': 100},
>
>     {'client': 'xyz', 'name': "Miguel Díaz-Canel", 'rating': 0.32,
> 'total': 100},
>
>     {'client': 'udz', 'name': "Ilir Meta", 'rating': 0.06, 'total': 150},
>
>     {'client': 'udz','name': "Abdelmadjid Tebboune", 'rating': 4.0,
> 'total': 150},
>
>     {'client': 'udz','name': "Alexander Lukashenko", 'rating': 3.1,
> 'total': 150},
>
>     {'client': 'udz', 'name': "Miguel Díaz-Canel", 'rating': 0.32,
> 'total': 150},
>
> ]
>
>
> items = remove_duplicate_values(items)
>
>
> pprint(items)
>
>
>
> Here is the output
>
>
> [{'client': 'xyz', 'name': 'Ilir Meta', 'rating': 0.06, 'total': 100},
>
>  {'client': '', 'name': 'Abdelmadjid Tebboune', 'rating': 4.0, 'total':
> ''},
>
>  {'client': '', 'name': 'Alexander Lukashenko', 'rating': 3.1, 'total':
> ''},
>
>  {'client': '', 'name': 'Miguel Díaz-Canel', 'rating': 0.32, 'total': ''},
>
>  {'client': 'udz', 'name': '', 'rating': '', 'total': '150'},
>
>  {'client': '', 'name': '', 'rating': '', 'total': ''},
>
>  {'client': '', 'name': '', 'rating': '', 'total': ''},
>
>  {'client': '', 'name': '', 'rating': '', 'total': ''}]
>
>
>
> You can see the name and rating values also marked empty for client (udz),
> now is it possible that the function only check client key
>
>
>
> On Fri, Jan 8, 2021 at 6:51 PM Alan Gauld via Tutor <tutor at python.org>
> wrote:
>
>> On 08/01/2021 13:25, Alan Gauld via Tutor wrote:
>>
>> > OK, Lets take it one bit at a time.
>>
>> To summarize and make it easier to use in your existing code I;ll turn
>> it into a function:
>>
>> def remove_duplicate_values(dict_list):
>>     seen = {}
>>     for key in dict_list[0].keys():
>>         seen[key] = []
>>
>>     for dic in dict_list:
>>         for field,value in dic.items():
>>             if value in seen[field]:
>>                dic[field] = ""
>>             else: seen[field].append(value)
>>     return dict_list
>>
>> Call it with:
>>
>> items = remove_duplicate_values(items)
>>
>>
>> That function should work for any list of similar dictionaries.
>> But again untested!
>>
>> --
>> Alan G
>> Author of the Learn to Program web site
>> http://www.alan-g.me.uk/
>> http://www.amazon.com/author/alan_gauld
>> Follow my photo-blog on Flickr at:
>> http://www.flickr.com/photos/alangauldphotos
>>
>>
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>
>
> --
> Umar Draz
>


-- 
Umar Draz