Category "dictionary"

is there a faster way to get multiple keys from dictionary?

I have a dictionary: d = {'a':1, 'b':2, 'c':3, 'd':4} Then I have a list of keys: l = ['a', 'b', 'z'] My desired result is: [1, 2, None] What I'm doing

Fastest way to dump nested dict to the hard drive

I have a big (several Gigs) nested dictionary of this structure: { string1: {string1_1: int1_1, string1_2: int1_2, ...}, string2: {string2_1: int2_1, strin

Truncate long strings inside json in python

Given some json [ { "default_value": "True", "feature_name": "feature_1", "active_on": "remote_1,remote_2,remote_3,remote_4,remote_5

How to efficiently serialize python dict with known schema to binary?

I have a lot of python dicts with known schema. For example, the schema is defined as Pyspark StructType like this: from pyspark.sql.types import * dict_schema

How to export dictionary as CSV using Python?

I am having problems exporting certain items in a dictionary to CSV. I can export 'name' but not 'images' (the image URL). This is an example of part of my dic

How do i use comprehensions to output dictionary data after editing it and how to validate user input asking user to repeat

eList = [] while True: eDict = { "ID": "", "NAME": "", "EMAIL": "", "ADDRESS": "", "SALARY": ""} try:

Adding directional indication to flow map in R

I'm just getting started on visualising data with R. I've been working on creating a flowmap based off lats and long data from origins and destination of vario

How do you find the first key in a dictionary?

I am trying to get my program to print out "banana" from the dictionary. What would be the simplest way to do this? This is my dictionary: prices = { "ba

How to convert a pymongo.cursor.Cursor into a dict?

I am using pymongo to query for all items in a region (actually it is to query for all venues in a region on a map). I used db.command(SON()) before to search i

How can I do a dictionary format with f-string in Python 3 .6?

How can I do this format with a Python 3.6 F-String? person = {'name': 'Jenne', 'age': 23} print('My name {0[name]} and my age {1[age]}'.format(person, person)

MemoryError: Unable to allocate 1.88 GiB for an array with shape (2549150, 99) and data type object

I have a problem. I want to normalize with pd.json_normalize(...) a list with inside dict but unfortunately I got a MemoryError. Is there an option to work arou

Python help on TKinter

i'm trying to make an brick destroyer game on python with TKinter for my school project, it's barely finished but i have a problem when it's about to break some

When should I use ConcurrentDictionary and Dictionary?

I'm always confused on which one of these to pick. As I see it I use Dictionary over List if I want two data types as a Key and Value so I can easily find a val

Using ES6 Map with React and/or Redux

I am looking at using the ES6 Map object to do my hashing for me, instead of creating a custom hashing function. However, it seems to me that it doesn't have mu

Safe method to get value of nested dictionary

I have a nested dictionary. Is there only one way to get values out safely? try: example_dict['key1']['key2'] except KeyError: pass Or maybe python h

Replace tags in text file using key-value pairs from JSON file

I am trying to write a shell script that can read a json string, decode it to an array and foreach through the array and use the key/value for replacing strings

How to extract values from key value map?

I have a column of type map, where the key and value changes. I am trying to extract the value and create a new column. Input: ----------------+ |symbols

How to update history dictionary attribute of a class instance and preserve order?

I am new to class programming. I am trying to save initial attributes (which are a dictionary) of my object in its history, and then update history with the cha

Are dictionaries ordered in Python 3.6+?

Dictionaries are insertion ordered as of Python 3.6. It is described as a CPython implementation detail rather than a language feature. The documentation states

Find the sum of values within the values of a nested Dictionary

This is a question based on nested dictionaries. We are given a nested dictionary wherein in the outer dictionary, the name of the match is mentioned and the