How to remove null, false, and true Json file values?

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1

I have a JSON file with this data: 

{
    "in_reply_to_screen_name": null,
    "favorited": false,
    "id_str": "92",
    "entities": {
        "user_mentions": [],
        "symbols": [],
        "urls": [],
        "hashtags": [
            {
                "indices": [0,8]
            }
        ]
    },
    "geo": null,
    "user": {
        "verified": false,
        "notifications": null,
        "profile_sidebar_border_color": "FFFFFF",
        "geo_enabled": true,
        "profile_background_tile": true,
        "url": null,
        "id": 278,
        "default_profile": false,
        "lang": "pt",
        "location": null,
        "translator_type": "none",
        "protected": false
    },
    "id": 92,
    "in_reply_to_status_id_str": null,
    "in_reply_to_status_id": null,
    "created_at": "Tue Oct",
    "is_quote_status": false,
    "text": "Esta \u00e9 a vdd",
    "truncated": false,
    "retweeted": false
}

How can I exclude the key / value pair that contains value null , false and true of this file using Python?

Knowing that these values to be deleted appear in various parts of the dictionary and when I try to do this: 

with open(arq_geral,'r') as f:
for line in f:
    tweet = json.loads(line)
    dados_tweet.append(tweet)


for tweet in dados_tweet:
    if tweet["geo"]:
        del tweet["geo"]

It does not remove 'geo', for example.

    
asked by anonymous 31.10.2017 / 19:50

1 answer

2

Just do a recursive function: 

def filter_dict_by_value(dicionary, values):
    result = {}
    for key, value in dicionary.items():
        if type(value) is dict:
            result[key] = filter_dict_by_value(value, values)
        elif value not in values:
            result[key] = value
    return result

Traverses all key / value pairs in the dictionary; if the value is another dictionary, call the function again for this value; otherwise, if the value is not in the values list it will be kept in the final dictionary; if the value is in the list, it will be ignored.

The code would look something like: 

import json

with open("data.json") as json_file:
    data = json.load(json_file)

def filter_dict_by_value(dicionary, values):
    result = {}
    for key, value in dicionary.items():
        if type(value) is dict:
            result[key] = filter_dict_by_value(value, values)
        elif value not in values:
            result[key] = value
    return result

print(filter_dict_by_value(data, [None, False, True]))

See working at Repl.it

Producing output: 

{
    'id_str': '92', 
    'entities': {
        'user_mentions': [], 
        'symbols': [], 
        'urls': [], 
        'hashtags': [
            {
                'indices': [0, 8]
            }
        ]
     }, 
     'user': {
         'profile_sidebar_border_color': 'FFFFFF', 
         'id': 278, 
         'lang': 'pt', 
         'translator_type': 'none'
     }, 
     'id': 92, 
     'created_at': 'Tue Oct', 
     'text': 'Esta é a vdd'
}
    
31.10.2017 / 20:35
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