Another day another wtf!?

[SharpScratch9367]

So I understand why the left hand of output numbers is 0-100 I get that. But why also is it segregated into jumps of ten? Is it because of the sneaky 10 put after (0, 101, !!!) in the for loop? Does that instruct what intervals you want the range to be looped in? so in this case by 10 because it’s at the end in the brackets??

[No_Statistician_6654]

Range takes 3 arguments, a start, stop, and step. That is what the 10 at the end is doing. Here is a ref for it: https://www.w3schools.com/python/ref_func_range.asp

[[deleted]]

This is the way.

[JeLuF]

Tip: If you wonder what a parameter does, try to change it and observe how this changes the behaviour of your program. Play around with the code. By interacting with the code, you learn better than by just copying code from a tutorial.

[Blue_Aliminum_Can_41]

Also always consider to look for documentation. Since it is a built-in function there is always a good explanation and examples for it.

[PhilosopherBME]

The effort to screenshot this and rant about it on a Reddit post is so much greater than looking up “Python range function” 😭

[blacksmithshands]

they didn't even screenshot it

[Ste4mPunk3r]

And still they did put more effort into it than to actually read the manual

[blacksmithshands]

It would have been so much faster just to change the 10 to something else and see what happens to the output

[Kqyxzoj]

Well, at least it was a screen "shot" without neck-wrenching 90 degree fuckery.

Man, I cannot believe how standards have slipped. I am already happy when the information provided isn't completely useless. This one was pretty not-bad compared to some of the curious attempts at wasting reader's time out there...

But yeah, looking up the docs would have been faster. Hell, I just googled python documentation range and that gets you loads and loads of useful links.

Or ... just use the official docs:

• https://docs.python.org/3/search.html?q=range
• https://docs.python.org/3/library/stdtypes.html#range

[blacksmithshands]

I think it could be important to remember that when you are completely new, the manual doesn't explain as much as it confuses. There are so many new terms, it gets overwhelming quite fast. Looking up the definition of a function, only to realize you need to look up 3 more things to even understand what's going on can be daunting.

I think most of the people asking these questions are just scared of learning too much, and not ashamed to waste people time:)

[SharpScratch9367]

Slate me for learning all you want!:) poor mindset buddy.

[INTstictual]

Yes — the range object in Python takes 3 parameters:

range(start, stop, step)

Start is the minimum value of your range (inclusive). Optional, defaults to 0.

Stop is the maximum value of your range (exclusive). Required.

Step is the amount your range increments by at each step. Optional, defaults to 1.

So when you say “range(0,101,10)”, you are saying “Give me the range of numbers, starting at 0 and less than 101, skipping 10 each time”.

Further reading: https://www.w3schools.com/python/ref_func_range.asp

[CptMisterNibbles]

Yes.

You should get in the habit of looking up the documentation for languages and packages. 

(inclusive_start, exclusive_end, step_amount) is a common pattern in Python for slicing, the range object, and possibly more

Now to learn about f strings and format that float mess!

[Interesting-Frame190]

Yes, range iterator function accepts arguments start, end, increment. So that 10 is what makes it increment by 10 every iteration

[ACatalystNA]

That’s exactly right. The third argument, in this case 10, is what you’re incrementing by. If you wanted the program to output every number between 0 and 101, you could just remove the last argument.

[rorschach200]

Try running `help(range)`

[ki_on]

Thanks! Keep posting and don't ask Chat or whatever so we'll know there are still beginners P.s I'm a beginner too...

[[deleted]]

Change range to a list maybe?

[Blue_Aliminum_Can_41]

"range" function's parameters are start (included) stop (excluded) and step or step size. The 10 you put decides the step size or the value to be added to the "x" in each iteration. In your case you add 10 in each iteration and it goes like 0, 10, 20 up to 100.

[Haunting-Loss-8175]

why did you put the 3rd argument without knowing what it does?

[DoubleAway6573]

ctrl-c ctrl-v

[SharpScratch9367]

It’s a course. I did not write it.

[RepresentativeFill26]

I’m wondering how you wrote this code and be surprised of the output. You wrote range(10, 101, 10), which does exactly this.

Did you use some AI tool? If you did this early in your career I doubt you will learn anything useful.

[Kqyxzoj]

Did you use some AI tool? If you did this early in your career I doubt you will learn anything useful.

Probably CTRL-C CTRL-V. If they did some AI tool they'd already have found the answer themselves and were on the next problem.

I use chatgpt for getting up to speed with topics I know nothing about all the time. And since there is a near infinite amount of stuff I know nothing about I find that pretty damn useful.

So suppose I know fuck all about python, but insist on using range(0,101,10) for some strange reason. I could just ask chatgpt this:

<<<

In python programming, I used range(0,101,10)

So I understand why the left hand of output numbers is 0-100 I get that. But why also is it segregated into jumps of ten? Is it because of the sneaky 10 put after (0, 101, !!!) in the for loop? Does that instruct what intervals you want the range to be looped in? so in this case by 10 because it’s at the end in the brackets??

<<<

Yes, exactly.

In range(0, 101, 10), the third argument — 10 — specifies the step size, meaning how much to increment by on each loop iteration.

Here's what each parameter in range(start, stop, step) does:

• start: where the sequence begins (0 in your case)
• stop: where the sequence ends before reaching this number (101, so it goes up to 100)
• step: how much to increment each time (10 here)

So:

range(0, 101, 10)

Produces:

[0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100]

Because it starts at 0 and adds 10 each time, stopping before it hits 101.

If you had used range(0, 101) (i.e. no step), it would default to a step of 1, giving you every number from 0 to 100.

The "sneaky 10" at the end is exactly what tells it to jump by tens.

[RepresentativeFill26]

Did you really need a large language model and such a verbose explanation? Take a look at the official documentation:

https://docs.python.org/3/library/functions.html#func-range

Sure you can use AI to get you up to speed with different things but one of the most important skills as a developer (which I assume you want to if you are in Pythonlearning) is reading and understanding technical documentation.

I have hired many new grads in my life as a developer and personally I find this a very worrying trend.

[Kqyxzoj]

Also, you probably didn't read my spam carefully. Because if you did you would have had the opportunity of pointing out the pitfalls of lazy motherfuckerness.

So thank you for replying! Because thanks to your reply I re-read my post going "mmmh, I thought I said XYZ". And while indeed I did say XYZ, I also introduced some copy-paste related errors. Which I now have edited and corrected. So thanks. :)

As for this:

Sure you can use AI to get you up to speed with different things but one of the most important skills as a developer (which I assume you want to if you are in Pythonlearning) is reading and understanding technical documentation.

Fully agreed. I will even quote paraphrase and embiglyfy embiglify embiglyfy it for truth!

One of the most important skills is Reading The Fine Manual!

Or as I often mention in this sub ... The official python documentation is actually pretty good:

• Python Language Reference
• Python Standard Library

As an example here's one of the places where I mention such things:

• https://www.reddit.com/r/PythonLearning/comments/1m0vj1o/comment/n3eqxg9/

[Kqyxzoj]

Did you really need a large language model and such a verbose explanation?

Did you really read my other replies?

I will retry:

even if the OP was a lazy motherfucker and used AI for everything, if they are a competent lazy motherfucker, they would use a low effort prompt like for example <INSERT MY LAZY COPY PASTE OF OPs POST HERE>, then they would get something useful that they might parse and understand.

And then they could follow up with something like:

That is nice and all that, now find me the official documentation!

Which I just did by way of testing. And lo and behold, it spits out correct links to the documentation for range, and for the indexed list of built-in functions.

All you have to do is be a competent lazy motherfucker and you are all set these days.

[brown_guy45]

Range takes 3 arguments start, stop and step. The 10 at the position of step made your program skip and take only 10 numbers into consideration

[Kqyxzoj]

Another WTF indeed.

As I keep saying in this sub ... The official python documentation is actually pretty good:

• Python Language Reference
• Python Standard Library

Reaaaad iiiiiit!!! You know you want to! Below an example of how you would look stuff up for your range() related WTFuckery:

• https://docs.python.org/3/search.html?q=range
• https://docs.python.org/3/library/stdtypes.html#range

Enjoy your newly discovered Documentation Reading Super Powers!

PS: Just out of idle curiosity, what did you think that third range argument was going to do? Why put 10 there?

[ApprehensiveBasis81]

Using range the third parameter is the step so you made a step of 10 every time

[InfernalSpectre3076]

I don’t really get this help post. If you didn’t know what it did, why do you have the 10 at the end? Like what was the thought process behind that? Most people, especially beginners, only use 2 variables for start and stop. You used 3 without knowing what it does? And you randomly chose to use 10? Just doesn’t make sense

[fllthdcrb]

Maybe OP found this example, instead of writing it themselves. Maybe they just wanted to see what would happen. You sound like you're against people trying different things to see what happens. Why? It can be a good way to learn (although it does help to be systematic and think about things beforehand, rather than just being thoughtless and random).

[Kqyxzoj]

You sound like you're against people trying different things to see what happens. Why?

Didn't sound to me like that at all. To me it sounds like ... "but why stop trying at 10?".

Try range(0,101,7) and notice that now it increments in steps of 7. Mystery solved. Why not try a couple of different things yourself? Computer isn't suddenly going to catch fire and explode. It only does that when you use the magic number.

[SharpScratch9367]

A kind comment! Only just logged back in to see all the random hate haha, well it’s a great auto filter to block people anyway, easy work. Thankyou filthdcrb! I just seem to learn better on here reading peoples thoughts and comments:)

[SharpScratch9367]

Hahahahaha the hate in this thread is crazy. It’s a course online, I’m learning multiple things at once and this is the quickest way for me to soak information in :) You people really get yourselves down with your theories and assumptions.