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MongoDB updation not working with Pymongo

I wanted to add new keys to an existing object in a MongoDB docuemnt, I am trying to update the specific abject with update query but I don't see new keys in database.
I have a object like this:
{'_id': 'patent_1023',
'raw': {'id': 'CN-109897889-A',
'title': 'A kind of LAMP(ring mediated isothermal amplification) product visible detection method',
'assignee': '北京天恩泽基因科技有限公司',
'inventor/author': '徐堤',
'priority_date': '2019-04-17',
'filing/creation_date': '2019-04-17',
'publication_date': '2019-06-18',
'grant_date': None,
'result_link': 'https://patents.google.com/patent/CN109897889A/en', 'representative_figure_link': None
},
'source': 'Google Patent'}
I added two new keys in raw and want to update only 'raw' with new keys 'abstract' and 'description'
Here is what I have done.
d = client.find_one({'_id': {'$in': ids}})
d['raw'].update(missing_data) # missing_data contain new keys to be added in raw.
here = client.find_one_and_update({'_id': d['_id']}, {'$set': {"raw": d['raw']}})

Both update_one and update_many will work with this:
missing_data = {'abstract':'a book', 'description':'a fun book'};
ids = [ 'patent_1023', 'X'];
rc=db.foo.update_one(
{'_id': {'$in': ids}},
# Use pipeline form of update to exploit richer agg framework
# function like $mergeObjects. Below we are saying "take the
# incoming raw object, overlay the missing_data object on top of
# it, and then set that back into raw and save":
[ {'$set': {
'raw': {'$mergeObjects': [ '$$ROOT.raw', missing_data ] }
}}
]
)

Send json between Python and PHP

I have this code in Python (is interesterd poart of the code)
elements = [{'id': 1, 'name': 'Alex'}, {'id': 2, 'name': 'Jessica'}]
elements_json = json.dumps(elements)
requests.post('http://localhost:8000/api/add-element', data = {'json': elements_json})
Elements sometimes contain more elements.
In PHP (Laravel) I have this code:
public function Store(Request $request) {
$json = json_decode($request->json );
echo $json;
}
I want to store all elements but for test I want to print that but it not display me empty result. I test that on Postman. Where problem is?

How to check if something exist, then create and save it inside an array

I'm running a script to get information from an URL and then create a Json file. With that, I'll read thought the info, save the ones that I need and then insert into the database.
But, I'm having problem with a part of this info.
Info from the URL, saved in JSON
"images": [
{
"type": "PosterPortrait",
"url": "https://ingresso-a.akamaihd.net/img/cinema/cartaz/22455-cartaz.jpg"
},
{
"type": "PosterHorizontal",
"url": "https://ingresso-a.akamaihd.net/img/cinema/cartaz/22455-destaque.jpg"
}
],
"trailers": []
This is the part and with that I have to:
Check if there is something inside trailers
Save it in a array, regarding for their "type" and "url"
Save them in my database
I made a code to do that, the problem is, I'm new to python and I don't think it's working quiet right.
insert-events.py
if(i['trailers'][0]):
a = array.arr(
array.arr('url' = i['images'][0]['url'], 'type' = i['images'][0]['type']),
array.arr('url' = i['images'][1]['url'], 'type' = i['images'][1]['type']),
array.arr('url' = i['trailers'][0]['url'], 'type' = Trailer),
array.arr('url' = i['trailers'][1]['url'], 'type' = Trailer),
)
else:
a = array.arr(
array.arr('url' = i['images'][0]['url'], 'type' = i['images'][0]['type']),
array.arr('url' = i['images'][1]['url'], 'type' = i['images'][1]['type']),
)
This is the part of the code to get the info from the JSON and, then, save it in as an array of arrays.
Error
File "insert-events.py", line 46
array.arr('url' = i['images'][0]['url'], 'type' = i['images'][0]['type']),
SyntaxError: keyword can't be an expression
So, what I'm doing it wrong? It's the array structure or when I try to save the info?
Any help would be appreciate. Thanks!

The error you are seeing is because it looks like you are trying to call a function/class with keyword arguments, but not using the keywords, instead using the string.
def foo(a, b):
pass
foo(a=1, b=2) # Correct
foo('a'=1, 'b'=2) # Incorrect
If you want to save stuff with key/value associations, I would recommend using a dict (or maybe a list of dicts in your case)
if(i['trailers'][0]):
a = [
{'url': i['images'][0]['url'], 'type': i['images'][0]['type']},
{'url': i['images'][1]['url'], 'type': i['images'][1]['type']},
] # etc.
else:
a = [
{'url': i['images'][0]['url'], 'type': i['images'][0]['type']},
{'url': i['images'][1]['url'], 'type': i['images'][1]['type']},
]
Lastly as a semi-unrelated note, checking for i['trailers'][0] will throw an IndexError if i['trailers'] is an empty list ([]). You can check for something in i['trailers'] using just if i['trailers']:.

How to find non-retweets in a MongoDB collection of tweets?

I have a collection of about 1.4 million tweets in a MongoDB collection. I want to find all that are NOT retweets, and am using Python. The structure of a document is as follows:
{
'_id': ObjectId('59388c046b0c1901172555b9'),
'coordinates': None,
'created_at': datetime.datetime(2016, 8, 18, 17, 17, 12),
'geo': None,
'is_quote': False,
'lang': 'en',
'text': b'Adam Cole Praises Kevin Owens + A Preview For Next Week\xe2\x80\x99s',
'tw_id': 766323071976247296,
'user_id': 2231233110,
'user_lang': 'en',
'user_loc': 'main; #Kan1shk3',
'user_name': 'sheezy0',
'user_timezone': 'Chennai'
}
I can write a query that works to find the particular tweet from above:
twitter_mongo_collection.find_one({
'text': b'Adam Cole Praises Kevin Owens + A Preview For Next Week\xe2\x80\x99s'
})
But when I try to find retweets, my code doesn't work, for example I try to find any tweets that start like this:
'text': b'RT some tweet'
Using this query:
find_one( {'text': {'$regex': "/^RT/" } } )
It doesn't return an error, but it doesn't find anything. I suspect it has something to do with that 'b' at the beginning before the text starts. I know I also need to put '$not:' in there somewhere but am not sure where.
Thanks!

It looks like your regex search is trying to match the string
b'RT'
but you want to match strings like
b'RT some text afterwards'
try using this regex instead
find_one( {'text': {'$regex': "/^RT.*/" } } )

I had to decode the 'text' field that was encoded as binary. Then I was able to use
twitter_mongo_collection.find_one( { {'text': { '$not': re.compile("^RT.*") } } )
to find all the documents that did not start with "RT".

Update and create a multi-dimensional dictionary in Python

I am parsing JSON that stores various code snippets and I am first building a dictionary of languages used by these snippets:
snippets = {'python': {}, 'text': {}, 'php': {}, 'js': {}}
Then when looping through the JSON I'm wanting add the information about the snippet into its own dictionary to the dictionary listed above. For example, if I had a JS snippet - the end result would be:
snippets = {'js':
{"title":"Script 1","code":"code here", "id":"123456"}
{"title":"Script 2","code":"code here", "id":"123457"}
}
Not to muddy the waters - but in PHP working on a multi-dimensional array I would just do the following (I am lookng for something similiar):
snippets['js'][] = array here
I know I saw one or two people talking about how to create a multidimensional dictionary - but can't seem to track down adding a dictionary to a dictionary within python. Thanks for the help.

This is called autovivification:
You can do it with defaultdict
def tree():
return collections.defaultdict(tree)
d = tree()
d['js']['title'] = 'Script1'
If the idea is to have lists, you can do:
d = collections.defaultdict(list)
d['js'].append({'foo': 'bar'})
d['js'].append({'other': 'thing'})
The idea for defaultdict it to create automatically the element when the key is accessed. BTW, for this simple case, you can simply do:
d = {}
d['js'] = [{'foo': 'bar'}, {'other': 'thing'}]

From
snippets = {'js':
{"title":"Script 1","code":"code here", "id":"123456"}
{"title":"Script 2","code":"code here", "id":"123457"}
}
It looks to me like you want to have a list of dictionaries. Here is some python code that should hopefully result in what you want
snippets = {'python': [], 'text': [], 'php': [], 'js': []}
snippets['js'].append({"title":"Script 1","code":"code here", "id":"123456"})
snippets['js'].append({"title":"Script 1","code":"code here", "id":"123457"})
print(snippets['js']) #[{'code': 'code here', 'id': '123456', 'title': 'Script 1'}, {'code': 'code here', 'id': '123457', 'title': 'Script 1'}]
Does that make it clear?