11 Tips And Tricks To Write Better Python Code

In this video, I show 11 Tips and Tricks to Write Better Python code! I show a lot of best practices that improve your code by making your code much cleaner and more Pythonic.
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All Tips:
1) Iterate with enumerate instead or range(len(x))
2) Use list comprehension instead of raw for loops
3) Sort complex iterables with sorted()
4) Store unique values with Sets
5) Save memory with Generators
6) Define default values in Dictionaries with .get() and .setdefault()
7) Count hashable objects with collections.Counter
8) Format strings with f-Strings (Python 3.6+)
9) Concatenate strings with .join()
10) Merge dictionaries with {**d1, **d2} (Python 3.5+)
11) Simplify if-statements with if x in list
List comprehension Tutorial: • List Comprehension in ...
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Python #Tips
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[@patloeber]

I hope you find these tips helpful! Let me know if you have any other Python tips that improve your code :)

[@uploadvoice]

Helpful but too many ads cut...

[@kingkangkan]

Can you iterate from say idx 2 to n-4 of a list using enumerate without slicing or any extra lines of code...

[@abhisheksanwal1106]

@@sudhanshuranjan9 ya membership test is faster in set

[@Princess0Reem]

remarkable!

[@jorgemercadog]

Thank you!! Cheers from Chile!

[@user-wg2ph7ve8c]

In Python 3.9.0 or greater we can merge dictionaries using `|`: d1 = {"name": "Alex", "age": 25} d2 = {"name": "Alex", "city": "New York"} merged_dict = d1 | d2

[@drygordspellweaver8761]

I like this as it stays true to Pipe symbol

[@billw8dsx939]

you rock

[@CryptoIgnition]

And print(merged_dict == d1 | d2) will print out true

[@flames9310]

This syntax is way simpler.

[@albo5194]

Is there an easy (and fast for large dictionaries) way to merge dictionaries in a way, that it includes every value of both dicts with the same key? for example, if d2 would include "name": "Luca" instead of "Alex", i would like the merged output to be like: {"name": ["Alex", "Luca"], "age": 25, "city": "New York"}

[@FailedSquare]

0:20 Iterate with Enumerate x For Loops with If 1:02 List Comprehension x For Loops 1:51 Sort iterables with sorted() 3:00 Unique values with Sets 3:37 Generators replacement for Lists 4:58 default values for dictionary keys 6:06 Count objects with collections.Counter 7:39 f-Strings > str.format() 8:20 Build up strings with .join() 9:27 merge dictionaries - This feature is updated again in 3.9 using | 10:00 simplify if statements

[@patloeber]

Thanks for the summary :)

[@yt-sh]

@@patloeber you made this in 11 min, I see what u did there

[@DavidTangye]

@@patloeber This is a very nice video for quick reference on these coding best practices. Can you please copy this list of times to the video Description for future reference. That makes the vid hugely helpful for in future.

[@jordangl1]

Your videos are by far the most concise and easiest to assimilate compared to every other YT Python teacher (to me). Thanks for taking the time. Good stuff

[@Daniel-um9ye]

Superb content. I am a C++ programmer, but since 2019 have been dabbling with python. Being pythonic is actually what I look for as of now. Thanks.

[@evanhagen7084]

On the last tip it would be much faster to use a set instead of a list. Sets have constant lookup time but lists have O(n) lookup time.

[@sshishov]

To convert list into set you need to execute O(n) operation.

[@evanhagen7084]

@@sshishov my point is you shouldn't even create a list in the first place. You should create a set to begin with

[@sshishov]

Agree, but sometimes lists are needed if you want to keep duplicates or you want to keep items in inserted order.

[@andraspongracz5996]

@@sshishov True, but if you want to check membership, say, n times, than its O(n) vs. O(n**2). It depends on the problem which data structure is better, as your second comment shows. But if you are only worried about runtime, then @Evan Hagen is correct: you basically cannot lose by using a set (I mean even if you have to convert first), because if you run it once, it is the same runtime, but if you do it many times, then set is the better choice.

[@sshishov]

@@andraspongracz5996 agree 👍

[@manuelmanolo7099]

I thought this would be something that would go way over my head but, as some that recently started learning python, this was really valuable!

[@saurabhjain507]

I love how you explain with simplicity. Great content.

[@patloeber]

Thank you! Glad you like it!

[@eminm6383]

I almost don't know any python, but I was able to comprehend 80% of the content. Amazing simple explanation. Thanks.

[@Kinos141]

Finally, how to do strings properly. I love using something like that in c#, and I'm glad it's on other languages like python.

[@thebuggser2752]

Great collection of useful tips, presented very clearly and concisely. Thanks!!

[@schedarr]

That is absolutely golden video. Extremaly useful tricks that will make your life way much easier. I've already used 10 out of 11 but still it's nice refresher.

[@patloeber]

Great to hear!

[@davidvanleeuwen3274]

Thanks a lot! The first minute already helps a lot.

[@TheSuperUser]

Great video. Please make more of these quick tips for comparisons of "beginner" python code vs experienced developer idioms

[@patloeber]

Thanks :)

[@octobotdev]

Thanks for the tips, always great to listen to fellow Python devs!

[@RicardoAmaralAndrade]

Simply wonderful! Subscribed in the first 2 minutes! Python is the greatest modern language, and these tips are gold!

[@patloeber]

Thank you so much!

[@rushi7312]

I'm a beginner -ish and knew about half to 2/3rd, but also learned a few good tricks :) Thanks

[@vitalimueller6209]

Nr.3 you can also do: from operator import itemgetter sorted_data = sorted(data, key=itemgetter('age'))

[@patloeber]

Yes thanks for the tip :)

[@Mdroudian]

i like this

[@ekkyarmandi]

Nice tips. It speedup my code writing. Thanks, man.

[@alyssonmachado1254]

Valuable tips! Thank you very much!

[@mywebuniversity]

Excellent video, very precise and nicely done!

[@davidtalturejman9185]

Thanks man! Nice video!!

[@chakkarapaniv]

Hey, Excellent videos. The style is amazing! and more informative!. I am following you.

[@patloeber]

Great, thank you!

[@jmsl2027]

This was very informative, thank you!

[@rutanshudesai]

amazing tips, very very valuable. thank you for sharing.

[@victorsuarez4333]

Thank you, this video was very helpful!

[@MrGustavCR]

Another great video. Thanks for the amazing content.

[@patloeber]

Glad you like it :)

[@fahnub]

bro this was super helpful. thanks for this.

[@adamdeuxieme]

Thanks for these good tips !

[@akashgillella]

Wonderful tips. Every single one is pretty useful.

[@wintur2856]

Thanks for these tips! It's hard finding content outside beginner courses.

[@LuisGL90]

Nice tips! Thankyou so much!

[@NavinKumar-tv9hg]

Wonderful. Thank you!

[@abdallahsalim4759]

Thanks man, this was helpful

[@manojm9084]

This is a very good video. Thank you very much , keep up the good work .

[@HKHforpeace]

Really admire your work! Nice work mate

[@patloeber]

Thank you!

[@AmitabhSuman]

Really useful tricks! Thanks for sharing.

[@gauravrajput8109]

I am so glad I found this channel.

[@latt.qcd9221]

The idea of list comprehensions was new to me, but I was curious if there was an option for dictionary comprehensions and, sure enough, there is! Was able to clean up a lot of my dictionary for loops. Thanks!

[@janusztarnowski115]

and what you think about it ?kzbin.info/www/bejne/rpXQmp2fo9eeY9k

[@faizalimuhammadzoda4731]

Very useful information explained in a very easy-to-understand way. Thank you for the effort.

[@patloeber]

glad it was helpul!

[@PhuongVu-jv9eg]

Thank you very much! Keep up with the good work!

[@patloeber]

Thanks, will do!

[@Zephyr-tg9hu]

Awesome tips, thank you!

[@patloeber]

Glad it's helpful!

[@nebular-nerd]

Some interesting tips, I'm just going through a reformat of a new script and this should help tidy and speed some operations.

[@venkatesanr9455]

Expecting some series and by the way, good explanation with informative content, it helps a lot

[@patloeber]

Thanks!

[@faithinverity8523]

Superb [ ] of tips. Thank you!

[@AladdinPersson]

Nice video! I really like that you made those slides in between the tips (gonna steal that for my future videos 😁)

[@patloeber]

Thank you! Glad you like it

[@PaulTheEldritchCat]

Nice tips, I'll save the video for later. Thanks!

[@jth5726]

dude, I've been doing a programming course 12 weeks, I feel like f-strings are something we should have been taught immediately, why am I only learning it through you

[@datastako156]

very helpful. thank you!

[@vaggo9611]

perfect video, good job Python Engineer

[@patloeber]

Thanks so much!

[@alankritverma1839]

one of the best python videos. Really useful

[@jomelsanpedro7271]

thank you so much. keep it up you're the best.

[@patloeber]

thank you!

[@YouAreNotFree1]

First example: return [max(i, 0) for i in data]

[@GaelGendre]

Dude this is great, thanks!

[@patloeber]

happy to hear this :)

[@_Amilio_]

Love these Python tips

[@akira_asahi]

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

[@shababe2243]

Excellent information,Thanks

[@akshitstenaa]

I am your fan now , thx a ton mate for all these tips.

[@patloeber]

Awesome, thank you!

[@akshitstenaa]

Please try adding videos on Scarpping, ML & analytics . 🙂

[@prashanthreddy1924]

you made me a better programmer with this video. Please do more series of videos like this.

[@patloeber]

glad to hear this!

[@mostafasadeq3153]

what a legend , ty very much man

[@zacky7862]

This is great. I'm always looking on better coding style. Could you tell which vs code theme that you are using? Thanks

[@patloeber]

Yes, I think it's the Night Owl theme

Hey dude. Thanks for this video, it helped me a lot in my studies! What's the theme you're using? I found it really cool and couldn't find it on the marketplace

[@patloeber]

It's the night owl theme. Have a look at my tutorial about my VS Code setup :)

[@gudguy1a]

Still very relevant content, thanks for having this.

[@knowledgedaily1173]

This is one of the best python related videos I have seen.

[@patloeber]

thanks a lot!

[@mohamedmzoughi8234]

Very informative great job

[@changwei-zhe9406]

thanks for the useful sharing!!!

[@patloeber]

glad you like it!

[@tincustefanlucian7495]

Generators tip was quite a nice trick to know! So easy to be confounded with list generator.

[@patloeber]

yep it's very handy sometimes :)

[@manuelpardall8688]

Very useful tips and tricks! Thank You

[@patloeber]

glad it's helpful :)

[@petelogiudice8202]

Very helpful in refactoring my brain to be more pythonic!

[@nates3361]

You are like my Python guru! Thank you Sir!

[@patloeber]

glad you like it!

[@dineshbawage1297]

Very nice and informative. the videos u made for python are really interesting and enjoyable. Would you create some for the oops concepts and also any video regarding pytest frameworks. Thanks a lot and keep posting

[@patloeber]

Thanks! Yes I will add those topics to my list :)

[@mariovega6282]

Most excellent video!

[@diegoftorrent]

Congratulations for this piece of art!!!! This kind of teach methodology is extremely rare. Thank you!

[@janusztarnowski115]

what you think about this ? kzbin.info/www/bejne/eojRZmB7n52FY68

[@srimanthmahadev8272]

An alternative of TIP 10: if you have two dictionaries you can join them using | operator. d1={'one' : 1, 'two':2} d2={'three':3} d3=d1|d2 print(d3) output: {'one': 1, 'two': 2, 'three': 3}

[@patloeber]

yep great tip!

[@vishnuuvardhanreddy3010]

Bro i am new to python I am very much interested to learn python please give me suggestion to develop my python basics to reach up to a professional level

[@notbme2731]

@@vishnuuvardhanreddy3010 KZbin and reddit are your best friends to learn anything

[@user-zk3uo3ti6f]

Not worked on all versions of python, just new.

[@user-zk3uo3ti6f]

What about dict update method?

[@shashishekhar----]

very informative video brother 👍

[@arsonoakwood7938]

I'm amazed at how there are beginner programmers, who never read basic tutorial in official documentation, and then watch similar videos, thinking they are learning advanced concepts.

[@misaelpereira9679]

Awesome tips!

[@gomathikreddy350]

Great content. Thank you for sharing ur knowledge. It'll help if the font sizes are larger for screen casts. I watch ur videos on an old android phone. 😐

[@patloeber]

thank you for the feedback! I try to improve this on my newer videos

[@gomathikreddy350]

Thank you. 😊🙏

[@onurkoc6869]

You are Superman:) Thanks for all of sharing.

[@TejasBangera]

Thank you, Subscribed to the channel

[@patloeber]

Thanks!

[@pouyan74]

This is one of those channels that separate my life into pre- and post-subscription eras!

[@patloeber]

this comment made my day :) glad you're here!

[@krupaneshkrishnan9284]

Great video, Thanks.

[@castlecodersltd]

Very useful, thanks ☺

[@marco.nascimento]

Great tips!!

[@patloeber]

thank you!

[@etgaming6063]

If you aren't speeding up your videos during your scripting then you are a REALLY FAST typer, like holy crap. IDK how you can type those lists in under a second, that is crazy to me.

[@kitgary]

Very useful! More advanced topics please!

[@patloeber]

Thanks! I’ll try :)

[@leesweets4110]

Generators and dictionary merger were new to me and I can see being very useful. Are generators more costly in terms of time efficiency? Seems to me that calling it multiple times is less efficient than having a precomputed list.

[@ajaysurya9075]

Thanks for sharing this video 😊. But at last I can't understand that what was the final output after running the last code.

[@travelchimps6637]

Great content and background music

[@jorgeluismongeblanco6933]

For #1, I would prefer a list comprehension: data = [0 if e < 0 else e for e in data]

[@mrsingh5351]

super video! you could have included zip() function too

[@cktv3]

You did a good job, thanks

[@patloeber]

thanks!

[@p0ngzzznea780]

This is very useful for me python beginner. Thank you very much sir.

[@patloeber]

Glad to hear that

[@mmxo2631]

literally watched for 1:03 seconds and i love the video. I'm a beginner btw. SUBBED!

[@eugenenazirov]

Hello from Kazakhstan! Can you explain how the sorted() works inside? And what's the complexity of the algorithm of sorting complex iterables using sorted(iterable, key=) ?

[@peteralexander4892]

Excellent, thank you

[@patloeber]

Glad you like it!

[@tigrayrimey6418]

Great point Sir! Do you have any python implementation code for the passive-aggressive algorithm from scratch for Multiclass classification?

[@patloeber]

hmm not yet...

[@anthonycokayne7453]

Great tips 🙂 thanks

[@swannschilling474]

This is great!! 😊

[@patloeber]

thanks :)

[@zacky7862]

Could you please tell how to safely count or check the if the generators items are empty?