10 Python Shortcuts You Need To Know

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Welcome back to another video! In this video, I will be showing 10 useful python shortcuts! These won't be advanced shortcuts, just some python language features to save some time and lines of code. If you use python a fair amount, then this will definitely be worth your time.
⭐️ Timestamps ⭐️
00:00 | Overview
01:38 | F Strings
03:35 | Unpacking
06:07 | Multiple Assignment
07:35 | Comprehensions
10:55 | Object Multiplication
11:53 | Ternary Conditions
13:17 | Zip Function
15:22 | *args & **kwargs
18:53 | For & While Else
21:25 | Sort By Key
24:09 | BONUS
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⭐️ Tags ⭐️
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- F Strings
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- Ternary Conditions
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Опубликовано:

1 июн 2024

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Комментарии : 210

@TechWithTim 2 года назад

@Shalonchi 2 года назад

Something that he left out about unpacking is that you could use * to group a section of your collection. Let's grab his example tup = (1,2,3,4,5), if we would unpack it as follow a, *b, c = tup, than a = 1, b = [2,3,4], c = 5

@n49o7 2 года назад

You can also use this to optionally assign. For example, with a, b, *c = (1, 2), a == 1, b == 2, c == []. It's pretty ugly, though.

@yogiblak7819 2 года назад

In your example, what would determine that b = [2,3,4]? Is is because it is the MIDDLE values and 1 and 5 are the beginning and end? How would I get b to = [3,4,5] if a, *b, c = (1,2,3,4,5)?

@evanli4272 2 года назад

@@yogiblak7819 Hi I know this is late but I assume that you would instead just do a, b, *c = (1,2,3,4,5), because the star automatically divides it up into the number of divisions you need

@yogiblak7819 2 года назад

@@evanli4272 but there are 3 variables, so does it automatically assign a to first value, c to last and be to all values in between? Whatn if there were 60 elements in the list? Would b = all 48 of the values not in position 0 and and len - 1?

@jelmermulder7276 Год назад

That's exactly (one of the things) what I was looking for. Thanks

@xhjb4ever 2 года назад

“The first thing you need to know is the sponsor of this video”, haha

@shwm19 2 года назад

Was just about to say the same.

@stephane5346 2 года назад

raid shadow legends

@sdaniels1288 2 года назад

Smooth segue, lol!

@borat1 2 года назад

That’s Linus levels of smooth

@vinicus508 2 года назад

Hahaha so smooth. But with this high quality content I dont mind at all haha.

@huantian 2 года назад

Watch out when you multiply a nested list like that! All the sublists will be the same object, and changing one will change the rest

@paulah1639 2 года назад

This is important. I didn’t know that. Thanks for pointing it out.

@kenny-kvibe 2 года назад

I was once debugging exactly this problem for one whole day, where I didn't understand what happens at: [[random()]*5]*5 The 2D list was containing the same values because at run-time the "random" call executes first (most inner brackets) and returns a value and then that value gets mutated, and that mutation (column) gets mutated further on. It basically mutated the pointer/reference that points to the first "random" value. Must be really carefull when it comes to this!

@arkie87 2 года назад

@@kenny-kvibe I also had to debug this problem once. Luckily for me, it was in a relatively small program, so I could track it down somewhat quickly.

@jplkid14 Год назад

I ran into this and thought to myself...this sucks...lol

@Bassel-Ojjeh 2 года назад

You are truly a legend Tim. I used to code when I was younger but lost my passion for it however now I am re-engaged to coding and your videos have been FANTASIC. Keep up the excellent quality of your teaching and videos.

@marcoreiser8836 2 года назад

11:25 , you probably wouldn't want to do this since it uses the original list's reference to duplicate it. If you make changes to one of the nested lists the other lists will also be changed. If you do x[0][0] = 2 for example, x is now [[2,2,3],[2,2,3],[2,2,3],...] which is most likely not the desired behavior.

@serg472 2 года назад

There is no name for the multiple assignment because there is no multiple assignment here, it is still a tuple unpacking: x, y = 1, 2 is the same as: x, y = (1, 2) A tuple is defined by the commas, not the brackets. Brackets are optional in tuples and used just for readability, that's why a tuple with one element has to be declared as (1,) and not (1).

@kenhaley4 Год назад

Exactly right. Too bad it's not usually explained that way.

@fadamitanolatomiwas.miguel6626 2 года назад

God bless you Tim! Thank you! From Nigeria

@leowright9554 2 года назад

Long life to the nigerian fried rice, it's very tasty

@playerscience 2 года назад

Right!👍

@marckiezeender 2 года назад

fun fact: the "multiple assignment" syntax is actually the same as the unpacking syntax: the right side of the equation creates a tuple that is then unpacked by the left side. for instance: x, y = a, b creates a tuple (a, b) and then unpacks it into x, y

@DerMarkus1982 Год назад

That bit about For / Else was very insightful to me, specifically the fact that Else: ... only gets triggered if the For ... part has completed without a *break* . Thanks for this!

@matbailie3816 Год назад

Don't use this. There's a book full of reasons this is bad, not least being that even the creator regrets its inclusion in python.

@erin1569 2 года назад

Another cool thing combining multiple assignment, * and fstring: tup = (1, 2, 3, 4, 5) a, *b, _, c = tup print(f"{a = }; {b = }; {c = }") >>> a = 1; b = [2, 3]; c = 5 _ works as a variable (usually a throwaway one).

@alexbadger8385 2 года назад

Thank you for going over list comprehension. I was so confused on how to work them and their logic. You explained it so simply and beautifully

@MaBuSt 2 года назад

for list comprehension, or any other 'tips', its very easy to get in a habbit of trying to keep everything tight and fun and pythonic, but what should guide your behavior is the following- find someone who has had to troubleshoot a problem in a python module while under extreme time pressure, ask them what 'pythonic' habits are very hard to understand when under extreme duress. One of the pythonic habbits that because very hard to trouble-shoot under time pressure is list comprehensions where people have put way too much logic into a single conditional. How much is too much? A good rule of thumb would be 'anything more than 1 conditonal'. 1 conditional is easy, why is that our limit? Because the number of times that 1 condition turns into 2, or 3, or more during refactoring... is very high.. each step/addition makes sense when it is added but when you are trying to comprehend the entire list comprehension while on the run and in a hurry, it because a huge issue. list comprehensions are nice, just keep them very short and simple. create additional list comprehensions if you need to keep conditionalizing them. Make sure that the You under time pressure, or your friend or coworker, isn't in big trouble later.

@uscjake868 2 года назад

Thanks Tim! I couldn't program at all 6 months ago, and with videos like yours it really helps make coding fast and productive.

@Shepherd-ik1qw 4 месяца назад

EXTREMELY more helpful than I had expected !!! Thanks Tim !!

@paulah1639 2 года назад

Very helpful video. Straight to the point. I watched it several times to make sure I remember each one. I am using all of them now including the bonus itertools. Thanks a lot Tim. 👍👍

@darrorpsk6148 2 года назад

thank you so much for putting the compilation list up front.

@xwhitelight 2 года назад

Very very useful! Thank you Tim.

@polojuninho 2 года назад

That "bonus" one were very useful for me! Thx a lot!

@danbrown6698 2 года назад

This video is of extremely useful! You explain things pretty clear with great examples👍

@JeroenStiers 2 года назад

A very well paced and the exact level of detail for such a video. For a future version, you can maybe include the enumerate function to loop over a list while keeping track of the index (to do something every x elements - like printing a message)

@joshkristine6189 2 года назад

“The first thing you need to know is the sponsor of this video” You got it right Tim! 🤣 You Legend! Thanks for sharing this video.

@muktadirulislammahi6542 2 года назад

Though I knew much of those, It was quite helpful!!! Thanks tim!❣️

@timwebster85 Год назад

args and kwargs finally make sense! Thanks Tim

@SimonLam2024 2 года назад

Wow, I didn't know the For/While Else and other useful stuff. Thank you!

@emaddeve20 2 года назад

This Video is so helpful. Thank You Tim

@adityapundir6529 2 года назад

Thanks a lot Tim!

@samuelosagie-aruya923 2 года назад

This channel inspires me please keep up the good work.

@jinhoyoon2497 2 года назад

God this is the kind of stuff that makes me love Python. Thank you for this video! I’ve learned so much!

@dreamy-star 2 года назад

'for & while else' and last bonus is pretty nice tips!!

@sinasmith7521 2 года назад

your contents are really amazing man ...Thanks !

@troeteimarsch 2 года назад

that was eye opening, thank you!

@BoredSpaceRoo 2 года назад

Who in their right mind gave this video thumbs down? It is brilliant. Thank you Tim you Python genius. I’ve learnt so much from your videos.

@sleepy314 2 года назад

Great. Just right speed and content.

@level-onegamer8873 2 года назад

Thank you Tim That explain so much for me👍

@MakarovAlex98 2 года назад

Hey, Tim, hey! Thank you very much for your videos and tutorials. You make very useful content. Please give advice on what books and resources to use to study Python. I want to learn how to create bots and applications on a python. I’d really appreciate your help

@Gabirell 2 года назад

Thank you! Good work!

@yuchaofan 2 года назад

great explanation of args and kwargs

@wesleydcm 2 года назад

Very util! Thanks!

@mirajalmahmud2534 2 года назад

Just started learning python, your vids help me a lot. Thx man !!!

@h8handles 2 года назад

You really post a bunch it is great to see

@senaysew8231 2 года назад

Kind man! Thank U!

@stephenaustin3026 2 года назад

I've been following you for quite a while, but this is the first time I recognized from your accent that you're Canadian!

@arvidd 2 года назад

Wut? He is!?

@yogiblak7819 2 года назад

You said "Tern-er-rary". LOL! I don't know why I find that so funny, but I do. 😂 Keep up the great work! I love your videos and how fast you fly through it without all the padding like most RU-vidrs. You get in, explain it, show an example, and move on. The way it should be! Fan for life..

@TheUnofficialMaker 2 года назад

Great tips, thanks.

@akira_asahi Год назад

Thank you for the video. I am grateful for your time and contribution. Kind regards, Akira.

@ShivaPrasad-hm5lk 2 года назад

Your videos are my energy packs

@ananthramvijayaraj4554 2 года назад

hey, what happened to the audio from 11:41 to 11:44

@wateryagarvideos5186 2 года назад

Nothing, he just didnt say anything.

@rverm1000 2 года назад

Nice I didn't know any of them except for f string

@ryu8777 Год назад

awesome as usual. My bookmarks are full because of your great videos ))

@asaf7132 2 года назад

thanks for all the videos! may I ask to make some full time episodes on useful modules in python like intertools and random and much more I don't even know 😅

@MrAdrien914 2 года назад

I love to use kwargs for django models, makes everything so much faster to write, read and manage in case you change the model

@kostiantynjohanlanguedoc3155 2 года назад

Thank You 😊 very much...

@unknownman5296 2 года назад

700k🎉🎉🎉🎉congratz tim

@peasant5983 2 года назад

cool stuff, thanks Tim

@Diamond_Hanz 2 года назад

Thanks Tim

@ingluissantana 2 года назад

great video!!! Thanks!!!!

@bunmiade9767 2 года назад

Hello Tim. Your illustrations are very good. May I use your video for my class? I teach Python also.

@b391i 2 года назад

Keep going buddy 😎👍

@dillonbarnes232 2 года назад

Looks like an awesome video and super useful! *_Also, was the first comment._*

@mightye6669 2 года назад

pretty cool vid. thx mate

@kvelez Год назад

Thanks for teaching us "zip".

@sanjay.s4916 2 года назад

wooow ! awesome tricks and thanx for the video

@the_ehiane 2 года назад

Damn! Bro dosent even think. He just goes with the flow.

@AbubakarMulla23 2 года назад

Useful video bro...

@deniskomoda6423 11 месяцев назад

Thanks for another amazing video! I think I had an "AHA!" moment here, and I tried looking somewhere else if someone had already asked about it, but I found out I cannot even phrase it properly to render precise results in my search. I'll try to phrase here. Regarding the *args, if you use name, say, a list with another name besides args, you can still use the * to unpack the values exactly the same way, right? Up till now, I was attached to the idea that *args you could only use * to unpack iterables using specifically the variable name args, which I decided to test, and it is not true. So, is it a convention at all to use the variable name args when * unpacking with *args? Or is *args is just a way to refer to this technique of unpacking interables with *?

@Lunolux 2 года назад

nice video, thx for the explaination of *args, **kwargs, for else and while else ; this is cool, first time i see that in programmation langage

@nayanjha5375 2 года назад

Thanking Tim

@vijayragav4717 2 года назад

We need some Time out with Tim!

@ananthramvijayaraj4554 2 года назад

so true

@RashidKhan-je8ys 2 года назад

Thank you

@potatoesama5789 2 года назад

Love this

@guitaek4100 2 года назад

Multiplying a nested list causes trouble as x[0] is x[1] evaluates to True. That means if you change one, the other is changed as well

@user-jl7xw1oq5v 2 года назад

Great video! Really helpful

@user-gn6vj2mx4v 2 года назад

אחי מה אתה עושה פה?

@user-jl7xw1oq5v 2 года назад

@@user-gn6vj2mx4v היי! מתכנת כמוך (:

@Darkev77 2 года назад

Is there a way to unpack an iterable with an unknown number of entries? Or is it necessary to know the number of elements before hand?

@DrDeuteron Год назад

23:43 Prefer built-in: lst.sort(key=sum)

@alagappank1242 2 года назад

Good work💪💪

@beanbag1415 Год назад

I''m learning python in a uni class and I love tips like this to make me seem smarter lmao.

@mehdismaeili3743 Год назад

excellent.

@MaBuSt 2 года назад

WRT the f-string segment of the video, another way of printing variables that is very often used in early python (and thus everywhere in legacy code) is the format, bracket string: money = '$10.00' print("We have {} left to spend".format(money)) I used to use f-strings exclusively until some of my code was getting deployed into < python 3.0 environments and causing all kinds of issues. If you know you are deploying into a brand new, all-modern python environment then there is no issue but if you are not sure then you should seriously consider format bracket strings.

@sorachii8932 2 года назад

This was awesome. I consider myself an advanced python programmer yet I found valuable information in this video. Thanks a lot👍🏾

@IntangirVoluntaryist Год назад

what editor are you using that runs it right out of it and puts errors on the line where they errored?

@sergiomendoza6833 2 года назад

nice tricks!!

@mywebuniversity Год назад

Very good 👍

@codershorts 2 года назад

What’s difference in itertools chain and list extend ?

@amit12000 2 года назад

Nice video Tim

@zeroxiph Год назад

What font do you use?

@architech5940 Год назад

Great tutorials! However, it's hard to believe that One can start a 100k career from tutorials and 3 month boot camps.. So if you were to create a road map for individuals pursuing a dev job as a self taught person, what would this road map be? How likely am I to land a job assuming I did posses the necessary skills? What are dev interviewers expecting from the interviewee? What should I avoid in learning code so as not to waste my time. Much appreciated!

@mustafakhan5821 2 года назад

Pretty cool.

@hul8376 2 года назад

very good

@user-do3pd1sk6c 2 года назад

12:10 You can also write 2 > 3 and 1 or 0 and that's pretty much the same thing

@not_vinkami 2 года назад

Yes this works, but Python has given you the better way for the same action

@user-do3pd1sk6c 2 года назад

@Pínned by Téch With Tím haha nice scam bot

@not_vinkami 2 года назад

@@user-do3pd1sk6c talking about how fake a scam bot can be

@MrJamestreynolds Год назад

I'd like to know how Tim gets the execution duration of the script at the bottom of the terminal. Is this a built in feature of vscode? Ie: "Finished in xxxxms"

@soniablanche5672 Год назад

There is also formatted string 'Hello, {}'.format(name)

@AmodeusR Год назад

The unpacking lacked a little bit of clarity. In javascript, it's called destructuring and, when destructuring an object you need to wrap it with curly braces, and refer to the object key, in which you get the value from it. You didn't clearly explain, in python we do the same, with the olny caveat that it returns the keys, not the values and we'd need to do dict.items() to get the items?

@DuyTran-ss4lu 2 года назад

Awesome

@MuhammadAli-pe5ef 2 года назад

what editor you use? kindly recommend

@sandpaperunderthetable6708 2 года назад

Sublime text

@iansjackson 2 года назад

In the section on list comprehension, in printing out the dictionary example at the end I could not discern why the otput had the order (or seemngly lack of order) it did! Could anyone explain, I'm sure I'm missing the obvious?

@ONLYUSEmyTOILET Год назад

The dict comprehension is iterating over a set of the characters in the sentence. Sets are an unordered data structure and therefore don't preserve insertion order.

@ahoe 2 года назад

Hey Tim, quick question. A few weeks back I heard about a feature, where you can save the result of a condition and use it later in the program again. Do you know what that was called?