🔒 I dont understand how this works at all. | Python | Page 1

ruby gorgeBOT May 12, 2024, 9:04 PM

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@warm fable

Python help channel opened

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Ask your Python question, not if you can ask or if there's an expert who can help.
Show a code sample as text (rather than a screenshot) and the error message, if you've got one.
Explain what you expect to happen and what actually happens.

:warning: Do not pip install anything that isn't related to your question, especially if asked to over DMs.

barren venture May 12, 2024, 9:04 PM

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!code

ruby gorgeBOT May 12, 2024, 9:04 PM

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Formatting code on Discord

Here's how to format Python code on Discord:

```py
print('Hello world!')
```

These are backticks, not quotes. Check this out if you can't find the backtick key.

For long code samples, you can use our pastebin.

warm fable May 12, 2024, 9:05 PM

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oh i need to put the code in a pastebin thingy?

barren venture May 12, 2024, 9:05 PM

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Or

cyan flame May 12, 2024, 9:05 PM

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If it's too long to paste here

barren venture May 12, 2024, 9:05 PM

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!code

ruby gorgeBOT May 12, 2024, 9:05 PM

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Formatting code on Discord

Here's how to format Python code on Discord:

```py
print('Hello world!')
```

These are backticks, not quotes. Check this out if you can't find the backtick key.

For long code samples, you can use our pastebin.

barren venture May 12, 2024, 9:05 PM

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We don't allow file uploads.

warm fable May 12, 2024, 9:05 PM

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ah alright

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i put them into the website

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pasted

cyan flame May 12, 2024, 9:06 PM

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You have to share the resulting URL

warm fable May 12, 2024, 9:06 PM

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ah alright sorry

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https://paste.pythondiscord.com/CHJA

barren venture May 12, 2024, 9:07 PM

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And what's your question?

cyan flame May 12, 2024, 9:07 PM

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There's an error on line 218 I think

warm fable May 12, 2024, 9:07 PM

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I dont get anything. I cannot even comprehend anything

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it just doesnt make sense to me

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i dont understand how the code works

cyan flame May 12, 2024, 9:08 PM

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Did you write it?

warm fable May 12, 2024, 9:08 PM

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no

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it is the code i have to refer to for my final year exam

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like for example i dont get what a 2d list does

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and then when i get an explanation

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i dont understand like what the 2d list in the code actually does

barren venture May 12, 2024, 9:09 PM

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warm fable I dont get anything. I cannot even comprehend anything

Break it down and look at each function one at a time. Understand each function, then look at how they interact with each other.

cyan flame May 12, 2024, 9:09 PM

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Have you modified the code at all?

warm fable May 12, 2024, 9:09 PM

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cyan flame Have you modified the code at all?

no

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i was given a python 2 version of the code and a python 3 version of the code

warm fable May 12, 2024, 9:10 PM

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barren venture Break it down and look at each function one at a time. Understand each function,...

thats genuinely my issue. Im so stupid i dont get how they interact

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i dont understand some of the stuff in the program as well

cyan flame May 12, 2024, 9:10 PM

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So you're not stupid, you just don't know Python

warm fable May 12, 2024, 9:10 PM

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basically

cyan flame May 12, 2024, 9:10 PM

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You should stop calling yourself stupid.

warm fable May 12, 2024, 9:10 PM

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no im stupid for not revising the entire year

cyan flame May 12, 2024, 9:10 PM

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Ok, well I won't argue with that.

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:P

warm fable May 12, 2024, 9:11 PM

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im still at a beginner's stage

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everyone else advanced 😭

cyan flame May 12, 2024, 9:11 PM

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Do you have a book to learn from?

warm fable May 12, 2024, 9:11 PM

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yeah i guess so but sometimes when i read a book it suddenly turns into words

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it no longer goes into my head

barren venture May 12, 2024, 9:12 PM

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warm fable thats genuinely my issue. Im so stupid i dont get how they interact

By "interact", I mean look at what data is going in an out of the functions. These functions take data in the form of parameters, and give data back in the form of return values. To see how the program operates, look at where data is originating, and then see what functions the data is passed into.

If you're behind in your studies though, you may need to take a step back and reinforce the fundamental concepts used here, like functions and classes.,

cyan flame May 12, 2024, 9:12 PM

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There's no replacement for experience.

warm fable May 12, 2024, 9:12 PM

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barren venture By "interact", I mean look at what data is going in an out of the functions. The...

oh so like some tracetable stuff

barren venture May 12, 2024, 9:13 PM

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warm fable oh so like some tracetable stuff

Trace table? Do you mean traceback?

warm fable May 12, 2024, 9:13 PM

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barren venture Trace table? Do you mean traceback?

wait lemme give u an example

cyan flame May 12, 2024, 9:13 PM

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https://en.wikipedia.org/wiki/Trace_table

Trace table

A trace table is a technique used to test algorithms in order to make sure that no logical errors occur while the calculations are being processed. The table usually takes the form of a multi-column, multi-row table; With each column showing a variable, and each row showing each number input into the algorithm and the subsequent values of the va...

barren venture May 12, 2024, 9:14 PM

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Oh, I didn't know that had a name. Im surprised I've never come across that before.

And that can help, yes. I often create one of those on paper while debugging.

cyan flame May 12, 2024, 9:14 PM

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Yeah it's just pen-and-paper debugging

warm fable May 12, 2024, 9:14 PM

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something like this?

barren venture May 12, 2024, 9:16 PM

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What I meant is looking at how data "flows" through the program. That's how I tend to make sense of code. Programs typically have somewhere where data is "created" (read from a file or the internet), functions that do something to the data (they take the data, modify it, and return new data), then somewhere where the data is output (written back to file or send back over the internet).

If you think about it like that, you can visualize programs and "pipes" of data from where the data comes into the program, to where it's output at the end.

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I'm a very visual person, so seeing programs as pipes/wires of data has always helped me.

warm fable May 12, 2024, 9:17 PM

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ah alright

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well i think one of the issues may be the fact that i dont understand certain programming constants so to me it looks like the data is going through one pipe and teleporting out of another

barren venture May 12, 2024, 9:18 PM

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If you're behind in your knowledge though, start there. You can't read code that uses concepts that you don't understand.

warm fable May 12, 2024, 9:18 PM

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like one of the parts of the codes it makes like 51 lists

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why it makes 51 lists?

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i have no clue

warm fable May 12, 2024, 9:18 PM

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barren venture If you're behind in your knowledge though, start there. You can't read code that...

yeah

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ahhh

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oh so i trace where the data goes and the problem i stumble upon i revise that

barren venture May 12, 2024, 9:20 PM

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warm fable oh so i trace where the data goes and the problem i stumble upon i revise that

Once you have a good grasp of the fundamentals involved, yes, that would be a good way of approaching it. Or at least the way that I tend to approach reading code.

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You'll find what works for you over time.

warm fable May 12, 2024, 9:20 PM

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ah ok

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its because i find big blobs of code confusing

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also whats the best place

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to learn those fundamentals from

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like any specific sites or channels or?

cyan flame May 12, 2024, 9:20 PM

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!res

ruby gorgeBOT May 12, 2024, 9:20 PM

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Resources

The Resources page on our website contains a list of hand-selected learning resources that we regularly recommend to both beginners and experts.

warm fable May 12, 2024, 9:21 PM

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thank you

cyan flame May 12, 2024, 9:21 PM

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If you don't want to read your book there are some video resources there

barren venture May 12, 2024, 9:21 PM

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warm fable to learn those fundamentals from

Not GeeksForGeeks. Unfortunately, I can't recommend specific sites because I learned Python like a decade ago from books.

warm fable May 12, 2024, 9:21 PM

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barren venture Not GeeksForGeeks. Unfortunately, I can't recommend specific sites because I lea...

not geeksforgeeks?

barren venture May 12, 2024, 9:21 PM

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warm fable not geeksforgeeks?

No, they're trash and spread misinformation.

warm fable May 12, 2024, 9:22 PM

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oh damn 💀

barren venture May 12, 2024, 9:22 PM

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RealPython is the best Python site I know of, but I've only skimmed their stuff when helping other people who are referencing their site.

warm fable May 12, 2024, 9:22 PM

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ah alright

barren venture May 12, 2024, 9:22 PM

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They seem pretty good though.

warm fable May 12, 2024, 9:22 PM

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thank you guys for the help

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ill make another post if i find anything specifically difficult

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is there anything else i should know

barren venture May 12, 2024, 9:23 PM

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Ya, specific questions are far easier to answer. "Help me understand 200+ lines of code" is difficult to answer well.

warm fable May 12, 2024, 9:23 PM

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barren venture Ya, specific questions are far easier to answer. "Help me understand 200+ lines ...

sorry, my bad 😅

barren venture May 12, 2024, 9:24 PM

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No, it's fine. It's quite common. That's just more of a suggestion. You'll get better help with better-defined questions.

warm fable May 12, 2024, 9:24 PM

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alright, well thank you for helping me

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ill see you later guys

barren venture May 12, 2024, 9:25 PM

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You're welcome. You can !close this thread if you're done (it will auto close itself if you don't after an hour).

warm fable May 12, 2024, 9:25 PM

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ah alrigh

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well bye guys

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!close

ruby gorgeBOT May 12, 2024, 9:25 PM

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Python help channel closed

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#🔒 I dont understand how this works at all.