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

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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 :)

[wgphvec]

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

[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

[evanhagen]

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.

[Daniel-umye]

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.

[manuelmanolo]

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!

[jordangl]

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

[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.

[saurabhjain]

I love how you explain with simplicity. Great content.

[vitalimueller]

Nr.3 you can also do:

from operator import itemgetter
sorted_data = sorted(data, key=itemgetter('age'))

[TheSuperUser]

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

[eminm]

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

[thebuggser]

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

[plumberski]

Clear tips, like how you explain them, are simple and clear!

[RicardoAmaralAndrade]

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

[jth]

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

[Kinos]

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.

[etgaming]

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.

[davidvanleeuwen]

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

[YouAreNotFree]

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