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Questions tagged [dictionary]

A dictionary maps keys to values allowing efficient retrieval of values from keys. USE [map-function] tag about mapping functions over data, PLEASE ; and for geography, [maps].

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Core Data Fetch Result Crash “Attempt to create two animations for cell”

using core data i'm storing some airport info and for every airport i'm saving different note I have created the entity Airport and the entity Briefing Airport have 1 attribute called icaoAPT and ...
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28 views

How to get exact item one by one from a request data?

Following is an output from a get request: "ip": "8.8.8.8", "city": "Mountain View", "region": "California", "country": "...
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29 views

How to remove the list from a list of dictionaries

In Django, I do a 3rd party API call and get a list of dictionaries as a result. I would like to use this in my return render call in Django. But when I do this, I get: 'Context must be a dict rather ...
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Subscription vs calling an attribute [duplicate]

I am trying to understand what are the technical and philosophical differences between the subscription method and simply calling an attribute. For example, in pandas, you can call a column either by ...
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39 views

Python Loop Perfomance issue

I have below piece of code to extract all emails from inbox: def fromemailid(inbox_item_list1): result2, email_data = con.uid('fetch', inbox_item_list1, '(RFC822)') # raw_email = email_data[0][...
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How to count the unique values of a column and append each value to a dictionary?

The tutorial suggests this solution opened_file = open('AppleStore.csv') from csv import reader read_file = reader(opened_file) apps_data = list(read_file) content_ratings = {} for row in apps_data[1:]...
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39 views

How to find a matching value from userdefaults keys

I'm still new with Swift so I'll try to explain this as best as I can... I have a plist that is a dictionary array. Here's a portion of it: So with the below code, I want to only add the information ...
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1answer
43 views

__dict__ Attribute in Python

Following piece of code lists the attributes of a class named 'A' in a sorted order:- >>> class A(): def __init__(self, i): self.at = i >>> sorted(vars(A)) ['...
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28 views

How can i do to get more solutions in my dictionary reading an csv file?

I am learning python from zero and find an exercise about reading balances in csv files. In this code, that runs correctly, im getting a ratio from the last balance of that businesses, but now i want ...
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27 views

json dumps large list of dictionaries

I am trying to save a large list of dictionaries (above 100,000) as a json file by means of 'json.dumps'. The code runs without errors, but unfortunately it does not manage to save the full list. I ...
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Fill a list with parts until the sum of part volumes reaches a capacity, then create new list and fill

I have a list of parts with masses and want to create batches of parts. The batches have volume capacities as boundary. Whenever putting the next part in a batch would exceed that batches capacity, a ...
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28 views

Dict not loading as expected

I have some ordered Dicts that are saved as .pkl, In my code I test if the .pkl files exist, then load them, if not create them. My issue is if they already exist and have data I would expect the ...
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33 views

Can't return a dict for a method Python

I am using Python 3.8.3 on Windows, I'm very new at OOP. I am working on some trello stuff for work and I wanted to create a trello object so I can call them across the various functions. I had this ...
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how to keep selected list of keys from a dictionary in python?

I receive dictionary similar to this from a rest api I want to keep only those I have in keys_to_keep. but when it comes to 'five' it errors a_dictionary = {"one": 1, "two": 2, &...
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35 views

Why Last key missing from dictionary python

Code is below from decimal import Decimal sample = [ ("Book", Decimal("10.000"), Decimal("0E-20"), None), ("Pen", Decimal("66.66666"), Decimal(...

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