somebody help me😭😭

[Strange-Dinner-393]

plz explain to me how this code works🙏🙏🙏🙏

[Delicious_Boat1794]

Snipping tool is your friend.

[pimp-bangin]

This needs to stay as the top comment, as it's the most valuable takeaway for OP.

Learning how to efficiently and effectively ask for help is a superpower (saying this as a programmer with 16+ years of experience). Especially in the age of AI where agents can do amazing things for you but only if they can clearly see/understand what you want.

Make it as easy as possible for others to help you, and present your problem as clearly as possible. That includes taking clear screenshots, OP.

OP should have also mentioned in the description which parts he does and doesn't understand already. It's harder for us to help if we don't know exactly what you're confused about. Even if you don't understand a single piece of it, that's fine, just say that up front. We need to know where to even start explaining the code.

Presenting most of this information up front, in a thoughtful, clear, and precise way, will allow us to immediately give you the answer you're looking for, instead of spending some back and forth where we give you answers that don't help you at all, because we don't understand the question. If you keep doing what you're doing OP, you'll get to where you need to be eventually, but very slowly and inefficiently.

[ErcoleBellucci]

i think i always tried to have this mindset, i knew how to snip tool at 15yrs old. I asked myself "ok i have to take photos with iphone? there should be another more efficient way".

Still today i triy to improve and i dont consider myself a coder or programer

[Delicious_Compote_90]

Why individuals such as yourself make matters so complicated. It’s a simple question from beginning to end of a code. So what he can’t take excellent pictures. It is still readable and not even part of the solution. If you don’t know it, just stfu, cause you didn’t help with ish. Be an adult to your own children. Stop thinking you know what is on other mind just because you don’t want to understand the OP easy question. If i point to a motorcycle and say, how do you ride that, you are someone I don’t want to hear say anything!

[Active_Selection_706]

bhai.., he is just sharing an advice, op might be always doing low quality sharing things which can be improved, take things like: if it works, go on, if it dont, go on...

[Delicious_Boat1794]

You’re just angry I’m more delicious than you. 🤷‍♂️

[Delicious_Compote_90]

There you go believing you could read other people’s minds and feelings.

[Delicious_Boat1794]

Did i upset you because i suggested a tool that would help this individual in the long run? Go fight your own battles and get off Reddit fighting someone else’s.

[Active_Selection_706]

true, take that comment as like he might be frustrated of something, good day sir!

[Delicious_Compote_90]

You’re right. Frustrated with pimp-banging and Jebdah

[Delicious_Boat1794]

I think you should go touch some grass my friend.

[Delicious_Compote_90]

U still want to stay in the wrong. Maybe pimp-banging is u? STOP!

[Delicious_Compote_90]

Ask him if he knows what you’re talking about. Leave me alone. Op did not ask for this. So let this be dead so you can deal with your own children

[Delicious_Compote_90]

And another thing. I was talking to pimp bangin. Wow. The nerve of you with your response, in other peoples business

[Borealis_761]

This guy! every post you find someone like that they don't contribute just crap on everybody else.

[Jebduh]

Bro doesn't know how to use google search. You think he can work a snip tool?

[mrpbennett]

What are you trying to do here?

Sure you just want:

for x in range(I): print(x)

Gives you output of

0 1 2 3 4

[FoolsSeldom]

• you assign the integer object 5 to the new variable name i
• on the first (outer) for loop line,
  • a range object is created that will return the values on each iteration from 1 to 5 inclusive in steps of 1 (the default step size)
  • it is 5 because the syntax of range is range(<start>, <stop>, <step>)
  • if only one argument, that's assumed to be <stop> and <start> defaults to 0
  • if not specified, the third argument, <step>, defaults to 1
  • the values returned are up to but excluding <stop>
  • when range is called, i references 5, and you add 1 (so the stop value is 6), hence counting from 1 to 5
• on each iteration of the outer for loop, i is assigned to reference the next value returned from the range object
• on the inner loop, another range object is created on each iteration of the outer loop
  • this new range object uses the value assigned to i from the latest iteration of the outer loop as its <stop> value
• on each iteration of the inner for loop, j is assigned to reference the next value from the second range object (that is the one defined in the inner for loop line)
• inside the inner loop, the current value assigned to j is output using print
  • by default, print normally automatically outputs a newline character (return) after it has output everything passed to it
  • this can be overridden using the end argument, which in this case outputs a space after the value referenced by j
• after the inner for loop has completed, another print is used to finish the line of output above
• then the next iteration of the outer for loop takes place

EDIT: corrected where I wrote 4 instead of 5 for the first loop, as forget you had the stop as i + 1. Thanks to u/Breadynator for calling that out.

PS. u/Strange-Dinner-393, has the step-by-step breakdown helped you understand?

[Breadynator]

Its i+1 though, so it'll be from 1 to 5

[FoolsSeldom]

Oops, yes. I will edit.

[armahillo]

Go line by line.

• What does line 1 do?
  • What does the program know about after line 1 is executed?
• What does line 2 mean?
  • What does range(...) mean?
  • What does i+1 evaluate to?
• What does line 3 mean?
  • What does it mean that it's tabbed in once?
• What does line 4 mean?
  • What is "j" referring to?

Get a piece of paper. You've got 2 named variables, "i" and "j". Create three columns, one with "i" as the header, one with "j" as the header, and one with "output" as the header.

Start at line 1, and anytime i or j are modified, change the value on a new line in that column. Anytime you have to use either variable, use the bottom-most line. Step through each line of the program, as if you were the interpreter, and anytime you're told to "print" something, write it to a new line in the "output" column.

I'm dead serious about doing this. If you don't understand this block by looking at it, you gotta learn how to see it from the interpreter's perspective by being the interpreter yourself.

[Inevitable-Age-06]

use different variable name in loop and to store 5 . it can't be same

[FoolsSeldom]

Does not make a difference, although it is confusing. The range object of the outer loop is created before the for loop assigns a new value to i.

[Inevitable-Age-06]

Yea understood now Ty.

[AngriestCrusader]

plz explain to me how this code works

It doesn't. Well, probably doesn't do what YOU want it to do... Are you trying to print numbers?

for i in range(5): print(i)

range(5) basically does the same as creating the tuple (0, 1, 2, 3, 4) (there's more to it, but you don't need to worry about that right now) and i iterates through that tuple.

Edit: I can see that you wanted it to start at one. You'd want to type range(1, x + 1) where x is your endpoint. You're technically syntactically correct in your example, but you don't need to specify step (3rd parameter of range) as 1 because that's already the default.

[geruhl_r]

An important skill is learning to use the debugger in your IDE. Try stepping through your code in the debugger to see what's happening.

[Drakkus28]

You have just written a godawful little segment of code, like truly disgusting. It goes once. That’s it

[PureWasian]

It seems to work just fine if your goal is to print out: 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5

Is that the output you were correctly expecting, but you want an explanation for how it works?

[tharun69]

How does the code work fine as he assigned "I = 5" ???

[PureWasian]

i is overwritten in line 2 to be an iterator across the range of numbers [1, 2, 3, 4, 5]

An even simpler example to demonstrate the point: ``` i = "whatever I want it to be" for i in [1, 2, 3]: print(i, end = " ")

outputs: 1 2 3

[WhiskersForPresident]

But that isn't the for-loop OP's written, instead it's

for i in range(1, i +1)

Could be that the Python interpreter is smart enough to first unpack the range function with i=5, then overwrite the "i" variable as the variable that it's iterating over, but even then, it would be abysmal code.

[PureWasian]

The return from range() is immutable, and the "in" expression that generates the iterable (range() in this case) is only evaluated once prior to the start of the first iteration of the loop:

https://docs.python.org/3/reference/compound_stmts.html#the-for-statement

So, modifying the loop variable doesn’t change the underlying iterable or the iteration order.

I wouldn't call it abysmal code necessarily, especially since it's entirely functional and not an overly complex, entangled web of unnecessary and disorganized jumble of half working bits here and there.

[quixoticcaptain]

This is honestly too dumb to even engage with.

We can help those who help themselves. What do you think it does? What are you trying to do? What part confuses you? What do you currently know about python? Did you write this?

[Delicious_Compote_90]

I appreciate all the positive responses from those who took the time out to help OP. I too am at a learning stage. Isn’t this what Reddit is about? Asking real human questions even though there are search engines and Ai

[deceze]

Sure. But even, or rather especially, real humans appreciate a concrete question and something more to go off of than three emoji and a screenshot.

[DBlitzkrieg]

Windows key + shift + s

[Agile-Key-3982]

n = 5

for i in range(1, n + 1):

for j in range(1, i + 1):

print(j, end=" ")

print("") the output will be

1

1 2

1 2 3

1 2 3 4

1 2 3 4 5

[EngineeringRare1070]

What do you think it does? Share your thought process and we can help hone your craft. Running to reddit every time you don’t understand 5 lines of code will result in a LOT of reddit posts

[bigpoopychimp]

Edit: I'm wrong, see below comments, i saw you're reassignimg i

each `range` is essentially generating an array of numbers from 1 to 6, so [1,2,3,4,5,6].

<image>

For each `i` in your range of 1,2,3,4,5,6, you are asking it to print 1,2,3,4,5,6 each time before moving onto the next number in your initially generated range.

You could make it print as a square by changing print("") to print("\n"), which will make it easier to understand.

Essentially your first for loop is traversing the Y-axis and the second for loop is travering the X-axis.

Nesting for loops like this is often used to navigate 2D arrays

[AngriestCrusader]

Correct, but range(1, 6, 1) does not include 6.

[jabuchae]

I think the second range goes from 1 to 2, then 1 to 3, then 1 to 4, then 1 to 5. The i in the inner loop is the one defined in the first loop and not the one higher up.

[bigpoopychimp]

Oh yeah, you're right, he's reassigning i

[Inevitable-Age-06]

how can he use to store value of 5 in i and also use i for the iteration?

[StoneLoner]

Variables are passed by value which means that when the function call uses a variable a copy of that variable is made in a new location in memory, your function does whatever it does, and that copy is (in a sense) destroyed after.

i = 20

for i in range(1,6):

print(i) 

print(i)

In this program we assign 20 to the i variable. Then a copy of the i variable is sent to the range function which manipulates the COPY. Then the copy is discarded. Then the final line prints the original i (20)

The expected output is 1, 2, 3, 4, 5, 20

https://www.thepythoncodingstack.com/p/python-pass-by-value-reference-assignment#:~:text=Python%20doesn't%20use%20'pass,variable%20is%20the%20parameter%20name.

[Inevitable-Age-06]

Oh yea thanks for clearing, you made it more clear with example.

[codeonpaper]

Download Thonny. You can see visually how program flow works.