Why *ARGS and **KWARGS are Useful in Python

[@JohnWatsonRooney]

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[@brandone7273]

I'm a still newish infrastructure guy, trying to automate as much network functionality as I possibly can. I don't really know any devs to pick their brain or have them expound on a topic to really cement the concept in my head. Your videos have helped me tremendously in understanding python in a way that's actionable in my environment. Thank you!

[@JohnWatsonRooney]

thank you! I'm glad to have helped out in some way

[@oromis995]

absolute legend. I watched your web scraping video because it appeared on my feed and applies to my job, then I saw this one which was a missing piece of knowledge I had that I couldn't explain in my code. Nice job

[@JohnWatsonRooney]

Thanks that’s very kind I’m glad it helped you!

[@ea3gug]

Very interesting, now I know better python. I understand that when you use kwargs, it makes difficult for the IDE (Pycharm,...) to check that you are passing a valid header/parameter to the receiving class in edition mode or "compilation mode" before running, creating issues in runtime when you use the wrong entry. Thanks for your great video!

[@JohnWatsonRooney]

thanks for watching!

[@jjdawg9918]

Great video! It also confirms my distaste of highly overloaded operators where you are guessing at the behavior. But in full disclosure I'm a lowly C programmer ;)

[@Yeeeeeehaw]

man, your videos are extremely useful !

[@JohnWatsonRooney]

Thanks very kind

[@Septumsempra8818]

Him and Python 360 have the best scraping vids on KZbin right now!

[@gabrieljeca]

Wow, I finally understood those concepts! Awesome content as always, JWR!

[@JohnWatsonRooney]

Awesome! Thank you!

[@datapeon]

Bro you are doing great job. Learning lot of from y ❤

[@Matt-es1wn]

Dataclasses seem so amazing. I wanna start using these instead of the annoying merhods i use with pandas right now

[@danielmdubois]

This video does a good job on how, but maybe it could be better on why? I think some time could be spent explaining why you wouldn't just use a list parameter for any function (e.g.) that takes a collection, instead of *args. True, this would effectively enforce the caller performs some list comprehension on whatever is being dealt with, whether it be a tuple, multiple variables, iterable, etc... I think I know the answer -- turning something iterable into a list increases memory requirements and probably processing time from double work -- but it would be nice to be explicitly said; to explain why these syntax tricks add value to python. People coming from other languages, particularly statically typed languages, are probably more comfortable passing collections around, as it's a more straightforward concept. I feel like **kwargs is especially tricky to grok, because of the weird multi-step process of unpacking named arguments, which itself is a quirk specific to python, while then leaving a "remant" kwargs dictionary to operate on.

[@SydwasheretheIII]

I’ve been trying for hours to find answers on why I’d ever use *args and **kwargs instead of passing explicit lists and dicts. Every video or forum I’ve found explains HOW *args and **kwargs work, but I understood that from the start. Still stuck on the why :(

[@arthurpenndragon6434]

great explanation, really helpful!

[@JohnWatsonRooney]

Thanks!

[@KrAsHeDD]

Thanks so much, it helps

[@azhari7968]

This is very random but, you showed up in my recommendation page and I just wanna say that you have an awesome beard I can't not look at it

[@JohnWatsonRooney]

thanks, I'm going to take that as a compliment

[@keagankemp6275]

Sjoe 10mins to save hours of reading and frustration, great video

[@JohnWatsonRooney]

Thanks!

[@keagankemp6275]

@@JohnWatsonRooney equally impressive is that you are a self taught developer, I’m using that as motivation when python seems impossible

[@peterkim9696]

Please make a video how to deploy fastapi script online so other people can use my tool anywhere

[@geekyprogrammer4831]

There are already many videos on that.

[@stewart5136]

Another "brilliant" video from John. Pun intended 😉

[@Septumsempra8818]

A lesson from MrBeast: teach us something about args/kwargs in brilliant. We can't skip the information essential to this topic. Ad Retention = $$$

[@bryce3851]

7:15 python joke of they year

[@DoggARithm]

One of the best videos on the topic I've seen! Good explanation

[@Qwasieee_P]

Someday I'll be mature enough not to laugh everytime he says mydict 😖😖

[@bakasenpaidesu]

;)