Introduction to Python – Data Structures (Dictionaries)

Categories Python

You can follow along with the code from Github.

Dict

  • The main operations on a dictionary (dict) are storing a value with some key and extracting the value given the key. It is also possible to delete a key:value pair with del. If you store using a key that is already in use, the old value associated with that key is forgotten. It is an error to extract a value using a non-existent key.
  • Keys can be any immutable type – strings and numbers can always be keys. Tuples can be used as keys if they contain only strings, numbers, or tuples. If a tuple contains any mutable object either directly or indirectly, it cannot be used as a key. You can’t use lists as keys, since lists can be modified in place using index assignments, slice assignments, or methods like append() and extend().

Looping Techniques

You can follow along with the code flow from the Github.

  • You can use different techniques when looping through dictionaries.

items() method – The key and corresponding value can be retrieved at the same time.

  • enumerate() method – position index and corresponding value can be retrieved at the same time when looping through a sequence.
  • zip() method – To loop over two or more sequences at the same time.
  • reversed() method – loop over a sequence in reverse, first specify the sequence in a forward direction
  • sorted() method – loop over a sequence in a sorted order which returns a new sorted list while leaving the source unaltered.
  • set() method – Eliminates duplicate elements on a sequence. Set() can be using with sorted() method to loop over unique elements of the sequence in the sorted order.

164 Comments

  • courseworkninja.com
    01/17/2023

    coursework bank coursework plural coursework umich stats <a href="[Link deleted]

  • coursework subjects
    01/23/2023

    coursework service coursework based a levels coursework common app <a href=[Link deleted]subjects

  • coursework plan example
    01/23/2023

    custom coursework writing course work hero coursework for masters degree <a href="[Link deleted]plan example

  • coursework resources
    01/23/2023

    coursework moderation qmul coursework extension coursework writers <a href='[Link deleted]resources

  • nea coursework history a level
    01/24/2023

    coursework resources coursework like copa coursework
    guidelines <a href="[Link deleted]coursework history a level

  • do my coursework for me
    01/24/2023

    coursework for masters degree coursework king’s college coursework
    vs course work <a href="[Link deleted]my coursework for me

  • coursework for masters degree
    01/24/2023

    nursing coursework creative writing coursework ideas
    coursework project <a href="[Link deleted]for masters degree

  • coursework english language
    01/24/2023

    coursework in or on coursework upm coursework common app <A HREF=[Link deleted]english language

  • https://writingacoursework.com
    01/24/2023

    coursework guidelines 9396 creative writing coursework ideas coursework in <a href="[Link deleted]

  • coursework for high school
    01/24/2023

    nea coursework history a level differential equations coursework coursework bank <a href="[Link deleted]for high school

  • 2parties
    01/27/2023

    1vitriol

  • coursework help uk
    02/05/2023

    buy coursework online [Link deleted]

  • coursework science
    02/05/2023

    coursework online [Link deleted]

  • coursework writer uk
    02/05/2023

    coursework writing help [Link deleted]

  • coursework sample of written work
    02/05/2023

    coursework history [Link deleted]

  • coursework master
    02/05/2023

    coursework writing services [Link deleted]

  • degree coursework
    02/05/2023

    coursework paper [Link deleted]

  • buy coursework online
    02/05/2023

    coursework project [Link deleted]

  • coursework marking
    02/05/2023

    coursework website [Link deleted]

  • coursework science
    02/05/2023

    coursework writing [Link deleted]

  • coursework master
    02/05/2023

    custom coursework writing service [Link deleted]

  • best date sites
    02/07/2023

    dating personal new singles online dating site free online <a href="[Link deleted]date sites

  • european singles dating sites
    02/08/2023

    plenty of fish login page over 50 dating singles match dating site <a href="[Link deleted]singles dating sites

  • free dating sites for men
    02/08/2023

    christian dating for free [Link deleted]

  • fdating login
    02/08/2023

    daiting online [Link deleted]

  • datjng sites
    02/08/2023

    best sites dating [Link deleted]

  • single personal ads
    02/08/2023

    dating seiten [Link deleted]

  • american dating
    02/08/2023

    free dating sites totally free [Link deleted]

  • dating best sites
    02/08/2023

    datijg websites [Link deleted]

  • free dating chatting online
    02/08/2023

    dating site sign up online dating sites for free 100% browse free dating
    without registering <a href=[Link deleted]dating chatting online

  • dating website free
    02/08/2023

    dating site sign up [Link deleted]

  • totally free dating sites no fees ever
    02/08/2023

    which online dating site is best [Link deleted]

  • chat dating
    02/08/2023

    dating services for seniors [Link deleted]

  • farmers only dating website
    02/08/2023

    dating simulator [Link deleted]

  • free online dating & adult personals free
    02/09/2023

    plenty of fish dating free date web sites freetalk45 <a href='[Link deleted]online dating & adult personals free

  • gate.io texas
    02/13/2023

    I agree with your point of view, your article has given me a lot of help and benefited me a lot. Thanks. Hope you continue to write such excellent articles.

  • online custom essay writing service
    02/24/2023

    scholarship essay writing service application essay help custom law essays <A HREF=[Link deleted]custom essay writing service

  • essay on social service
    02/24/2023

    best online essay writing service who can i pay
    to write my essay who can help me write an essay <A HREF='[Link deleted]on social service

  • best college essay writing service
    02/24/2023

    help writing essay top rated essay writing service cheap custom
    essay writing <A HREF=[Link deleted]college essay writing service

  • what is the best custom essay site
    02/24/2023

    professional college application essay writers romeo and juliet essay
    help need help writing essay <A HREF='[Link deleted]is the best custom essay site

  • best college application essay service
    02/25/2023

    essay about service essay writers review best essay writing websites <a href="[Link deleted]college application essay service

  • .
    02/25/2023

    %random_anchor_text% %random_anchor_text% %random_anchor_text% <a href="[Link deleted]

  • best college essay writing service
    02/25/2023

    cheapest essay writing service reliable essay writing
    service essays on the help <a href="[Link deleted]college essay writing service

  • best college essay writing service
    02/25/2023

    cheapest essay writing service reliable essay writing service
    essays on the help [Link deleted]

  • buy an essay online cheap
    02/26/2023

    good essay writing website scholarship essay writing help custom essay writing service reviews <A HREF="[Link deleted]an essay online cheap

  • buy an essay online cheap
    02/26/2023

    good essay writing website scholarship essay writing help custom essay writing service reviews <a href=[Link deleted]an essay online cheap

  • buy an essay online cheap
    02/26/2023

    good essay writing website scholarship essay writing help custom
    essay writing service reviews [Link deleted]

  • essay community service
    02/26/2023

    need help writing scholarship essay best essay writing company top 10 essay writing services <A HREF=[Link deleted]community service

  • essay community service
    02/26/2023

    need help writing scholarship essay best essay writing company top 10 essay writing services [Link deleted]

  • cheap law essay writing service
    02/26/2023

    good customer service essay top essay writing services essay on helping poor people <A HREF='[Link deleted]law essay writing service

  • cheap law essay writing service
    02/26/2023

    good customer service essay top essay writing services essay on helping poor
    people [Link deleted]

  • cheap essay writing service
    02/26/2023

    cambridge essay service pay for someone to write my essay custom
    essays for cheap <a href="[Link deleted]essay writing service

  • cheap essay writing service
    02/26/2023

    cambridge essay service pay for someone to write my essay
    custom essays for cheap [Link deleted]

  • essay writing services scams
    02/26/2023

    buy essays online cheap best online essay writer help
    me write a descriptive essay <a href="[Link deleted]writing services scams

  • essay writing services scams
    02/26/2023

    buy essays online cheap best online essay writer help
    me write a descriptive essay [Link deleted]

  • best college application essay service
    02/26/2023

    essay about community service help with essay writing
    order custom essay online <A HREF=[Link deleted]college application essay service

  • best college application essay service
    02/26/2023

    essay about community service help with essay writing order custom essay online [Link deleted]

  • essay helper app
    02/27/2023

    essay writing service usa student essay help
    buy cheap essay online <a href="[Link deleted]helper app

  • essay helper app
    02/27/2023

    essay writing service usa student essay help buy cheap essay online [Link deleted]

  • buy college essay
    02/28/2023

    essay writing service usa best essay writers review
    help writing a compare and contrast essay <a href="[Link deleted]college essay

  • buy college essay
    02/28/2023

    essay writing service usa best essay writers review help writing
    a compare and contrast essay [Link deleted]

  • narrative essay writing help
    02/28/2023

    essay online help cheapest essays writing services custom essays review <a href="[Link deleted]essay writing help

  • narrative essay writing help
    02/28/2023

    essay online help cheapest essays writing services custom essays review [Link deleted]

  • essay writer program
    02/28/2023

    who will write my essay best online essay writer cheap essays to buy <a href="[Link deleted]writer program

  • essay writer program
    02/28/2023

    who will write my essay best online essay writer cheap essays
    to buy [Link deleted]

  • match dating site
    02/28/2023

    free single dating service free dating sites
    women dating online sites <a href="[Link deleted]dating site

  • match dating site
    02/28/2023

    free single dating service free dating sites women dating online
    sites [Link deleted]

  • best college application essay service
    02/28/2023

    cat essay writer english essay writers academic essay writing service <a href="[Link deleted]college application essay service

  • best college application essay service
    02/28/2023

    cat essay writer english essay writers academic essay writing service [Link deleted]

  • pay for essay cheap
    03/01/2023

    scholarship essay writing help essay editor service buy an essay cheap <a href=[Link deleted]for essay cheap

  • pay for essay cheap
    03/01/2023

    scholarship essay writing help essay editor service buy an essay cheap [Link deleted]

  • is gate io safe
    03/22/2023

    Reading your article has greatly helped me, and I agree with you. But I still have some questions. Can you help me? I will pay attention to your answer. thank you.

  • best college essay writing service
    03/30/2023

    custom writing essays services pay someone to write my essay essay writting services <a href='[Link deleted]college essay writing service

  • best college essay writing service
    03/30/2023

    custom writing essays services pay someone to write my essay essay
    writting services [Link deleted]

  • buy essay cheap
    03/30/2023

    essay writing service legal help my essay persuasive essay writer <a href="[Link deleted]essay cheap

  • buy essay cheap
    03/30/2023

    essay writing service legal help my essay persuasive essay writer [Link deleted]

  • order cheap essay online
    03/31/2023

    help writing college essays best writing service
    reviews help me write a descriptive essay <A HREF=[Link deleted]cheap essay online

  • order cheap essay online
    03/31/2023

    help writing college essays best writing service reviews help
    me write a descriptive essay [Link deleted]

  • what can i write my essay on
    03/31/2023

    essay on community service what is the best online essay writing service essay service review <a href="[Link deleted]can i write my essay on

  • what can i write my essay on
    03/31/2023

    essay on community service what is the best online essay writing service essay service review [Link deleted]

  • college essay editing service
    03/31/2023

    essay writers for pay essay writing services legal helping others essays <A HREF=[Link deleted]essay editing service

  • college essay editing service
    03/31/2023

    essay writers for pay essay writing services legal helping others essays [Link deleted]

  • cheapest essay writing service
    04/01/2023

    who can i pay to write my essay cheapest custom essay
    writing best college essay writing service <a href="[Link deleted]essay writing service

  • cheapest essay writing service
    04/01/2023

    who can i pay to write my essay cheapest custom essay writing best college essay writing
    service [Link deleted]

  • cheap essay buy
    04/01/2023

    essay writing service legal admission essay editing service cheap essay writer service <A HREF=[Link deleted]essay buy

  • cheap essay buy
    04/01/2023

    essay writing service legal admission essay editing service cheap essay writer
    service [Link deleted]

  • essay marking service
    04/02/2023

    help with writing a essay essay on helping poor people
    essay help live chat <a href="[Link deleted]marking service

  • essay marking service
    04/02/2023

    help with writing a essay essay on helping poor people essay help live chat [Link deleted]

  • admission essay editing service
    04/02/2023

    admissions essay help us based essay writing service fake essay writer <a href=[Link deleted]essay editing service

  • admission essay editing service
    04/02/2023

    admissions essay help us based essay writing service fake essay writer [Link deleted]

  • write my college essay
    04/02/2023

    essay on social service essay help live chat famous essay writers <a href=[Link deleted]my college essay

  • write my college essay
    04/02/2023

    essay on social service essay help live chat
    famous essay writers [Link deleted]

  • how to use a vpn
    04/10/2023

    vpn for netflix free proton vpn free vpn blocker free <a href="[Link deleted]to use a vpn

  • how to use a vpn
    04/10/2023

    vpn for netflix free proton vpn free vpn blocker free [Link deleted]

  • firestick vpn free
    04/10/2023

    best chrome vpn free best mac vpn service vpn for firestick free <a href="[Link deleted]vpn free

  • firestick vpn free
    04/10/2023

    best chrome vpn free best mac vpn service vpn for firestick free [Link deleted]

  • vpn providers
    04/11/2023

    vpn browser free free vpn for kodi best vpn torrenting <a href="[Link deleted]providers

  • vpn providers
    04/11/2023

    vpn browser free free vpn for kodi best vpn torrenting [Link deleted]

  • best buy vpn router
    04/11/2023

    hola vpn chrome whats the best vpn best vpn for windows
    2018 <A HREF="[Link deleted]buy vpn router

  • best buy vpn router
    04/11/2023

    hola vpn chrome whats the best vpn best vpn for windows 2018 [Link deleted]

  • google vpn free
    04/11/2023

    open source vpn free vpn torrenting free youtube vpn <a href=[Link deleted]vpn free

  • google vpn free
    04/11/2023

    open source vpn free vpn torrenting free youtube vpn [Link deleted]

  • best vpn windows
    04/13/2023

    free vpn download best vpn location for warzone business class vpn router <A HREF=[Link deleted]vpn windows

  • best vpn windows
    04/13/2023

    free vpn download best vpn location for warzone business class vpn router [Link deleted]

  • best vpn service for china
    04/14/2023

    best vpn for computer best free vpn windows 2019 best vpn <A HREF='[Link deleted]vpn service for china

  • best vpn service for china
    04/14/2023

    best vpn for computer best free vpn windows 2019 best vpn [Link deleted]

  • best kodi vpn
    04/14/2023

    best free vpn best vpn australia buy vpn accounts <a href="[Link deleted]kodi vpn

  • best kodi vpn
    04/14/2023

    best free vpn best vpn australia buy vpn accounts [Link deleted]

  • vpn online free
    04/14/2023

    free fast vpn free vpn hotspot shield vpn book <A HREF=[Link deleted]online free

  • vpn online free
    04/14/2023

    free fast vpn free vpn hotspot shield vpn book [Link deleted]

  • best vpn router 2022
    04/14/2023

    buy vpn accounts best windows vpn 2018 best vpn for torrents <a href="[Link deleted]vpn router 2022

  • best vpn router 2022
    04/14/2023

    buy vpn accounts best windows vpn 2018 best vpn for torrents [Link deleted]

  • hola vpn chrome
    04/15/2023

    turbo vpn for pc vpn express free vpn for laptop <a href="[Link deleted]vpn chrome

  • hola vpn chrome
    04/15/2023

    turbo vpn for pc vpn express free vpn for laptop [Link deleted]

  • vpn ghost
    04/15/2023

    pcmag best vpn free vpn for computer free vpn connection <a href=[Link deleted]ghost

  • vpn ghost
    04/15/2023

    pcmag best vpn free vpn for computer free vpn connection [Link deleted]

  • best vpn for roobet
    04/15/2023

    express vpn free download vpn free google chrome download free
    vpn <A HREF='[Link deleted]vpn for roobet

  • best vpn for roobet
    04/15/2023

    express vpn free download vpn free google chrome download free
    vpn [Link deleted]

  • biggest online casino bonuses
    04/21/2023

    online casino with free signup bonus real money usa no deposit
    online casino with free signup bonus real money
    usa casino world free online games <A HREF="[Link deleted]online casino bonuses

  • biggest online casino bonuses
    04/21/2023

    online casino with free signup bonus real money usa no deposit online casino with free signup bonus
    real money usa casino world free online games [Link deleted]

  • online gambling
    04/21/2023

    play for real money online casino best real money
    casino online online casino game <a href="[Link deleted]gambling

  • online gambling
    04/21/2023

    play for real money online casino best real money casino online online
    casino game [Link deleted]

  • online casinos for real money
    04/22/2023

    live casino online real money casino best casino
    sites <A HREF='[Link deleted]casinos for real money

  • online casinos for real money
    04/22/2023

    live casino online real money casino best casino sites [Link deleted]

  • online casino website
    04/22/2023

    online gambling online casinos real money online slots for real money <A HREF=[Link deleted]casino website

  • online casino website
    04/22/2023

    online gambling online casinos real money online slots for real money [Link deleted]

  • casino online confiavel
    04/22/2023

    casino sites online online gambling sites no deposit best online casinos real
    money <A HREF="[Link deleted]online confiavel

  • casino online confiavel
    04/22/2023

    casino sites online online gambling sites no deposit best online casinos
    real money [Link deleted]

  • casino slot games that pay real money
    04/23/2023

    no deposit real money online casinos playing with real money casino
    games online for money <a href="[Link deleted]slot games that pay real money

  • casino slot games that pay real money
    04/23/2023

    no deposit real money online casinos playing with real money casino games online for money [Link deleted]

  • bellisbet live casino
    04/23/2023

    san manuel online casino best online casino gambling for
    real money play casino <a href=[Link deleted]live casino

  • bellisbet live casino
    04/23/2023

    san manuel online casino best online casino gambling for
    real money play casino [Link deleted]

  • mobile online casino
    04/23/2023

    online casino gambling online gambling sites top online casinos <a href="[Link deleted]online casino

  • mobile online casino
    04/23/2023

    online casino gambling online gambling sites top online casinos [Link deleted]

  • online casino best bonus
    04/23/2023

    ceaser casinos online gambling sites no deposit real online <a href="[Link deleted]casino best bonus

  • online casino best bonus
    04/23/2023

    ceaser casinos online gambling sites no deposit real online [Link deleted]

  • mobile casino sites
    04/24/2023

    play live top online casinos usa online casino with free signup bonus real money <a href="[Link deleted]casino sites

  • mobile casino sites
    04/24/2023

    play live top online casinos usa online casino with free signup bonus real money [Link deleted]

  • caesars casino online
    04/25/2023

    ccasino online casino free bonus online free <A HREF=[Link deleted]casino online

  • caesars casino online
    04/25/2023

    ccasino online casino free bonus online free [Link deleted]

  • casino world free online games
    04/26/2023

    online casino with real money casino real money online free casinos online <a href="[Link deleted]world free online games

  • casino world free online games
    04/26/2023

    online casino with real money casino real money online free casinos online [Link deleted]

  • online slots real money free bonus
    04/26/2023

    game casino gambling games at casinos online casino with free signup bonus real money <A HREF="[Link deleted]slots real money free bonus

  • online slots real money free bonus
    04/26/2023

    game casino gambling games at casinos online casino with free signup
    bonus real money [Link deleted]

  • online casinos free money
    04/26/2023

    what is the best online casino for real money online gambling real money online casino games win real money <a href=[Link deleted]casinos free money

  • online casinos free money
    04/26/2023

    what is the best online casino for real money online gambling real money online casino
    games win real money [Link deleted]

  • casino games win real money
    04/26/2023

    best online casino usa online casinos playing with real money casino slots real money <A HREF='[Link deleted]games win real money

  • casino games win real money
    04/26/2023

    best online casino usa online casinos playing with real money casino slots real money [Link deleted]

  • konami slots download
    04/28/2023

    play ginger wild slots free slot games for fun slots of vegas <a href="[Link deleted]slots download

  • konami slots download
    04/28/2023

    play ginger wild slots free slot games for fun slots of vegas [Link deleted]

  • konami slots
    04/28/2023

    pogo slots fun game slot penny slots games free <a href="[Link deleted]slots

  • konami slots
    04/28/2023

    pogo slots fun game slot penny slots games free [Link deleted]

  • caesar slots su facebook
    04/29/2023

    real money slots vegasslotsonline play free slots <a href="[Link deleted]slots su facebook

  • caesar slots su facebook
    04/29/2023

    real money slots vegasslotsonline play free slots [Link deleted]

  • play online slots & casino
    04/29/2023

    free slots win money instantly online slots that pay real money igt slots free play
    igt slot machines online <A HREF='[Link deleted]online slots & casino

  • play online slots & casino
    04/29/2023

    free slots win money instantly online slots that pay real money igt slots free play igt slot machines
    online [Link deleted]

  • real casino slots free play
    04/30/2023

    luckyland slots monopoly slots free adult slots online <a href="[Link deleted]casino slots free play

  • real casino slots free play
    04/30/2023

    luckyland slots monopoly slots free adult slots online [Link deleted]

  • igt slots free play igt slot machines online
    04/30/2023

    best slot machines to play river slots sweepstakes slots machine
    game <A HREF='[Link deleted]slots free play igt slot machines online

  • igt slots free play igt slot machines online
    04/30/2023

    best slot machines to play river slots sweepstakes slots machine game [Link deleted]

  • online slots real money
    04/30/2023

    cats slots free play las vegas free slots games caesar slots su facebook <A HREF=[Link deleted]slots real money

  • online slots real money
    04/30/2023

    cats slots free play las vegas free slots games caesar slots su facebook [Link deleted]

  • 20bet
    09/24/2023

    I am currently writing a paper and a bug appeared in the paper. I found what I wanted from your article. Thank you very much. Your article gave me a lot of inspiration. But hope you can explain your point in more detail because I have some questions, thank you. <a href="[Link deleted]

  • bester binance Empfehlungscode
    12/23/2023

    Your point of view caught my eye and was very interesting. Thanks. I have a question for you. [Link deleted]

Leave a Reply

Your email address will not be published.