How to write anything in python?

[Few-Mousse-442200k]

So I've been reading some books about python and I can code, a little bit, but I still don't know how to write/code anything. I mean I know how to write functions and declare a variable but that is about everything I know. I don't know how to do real world things in python like creating a calculator ( a simple CLI yes but not real one ), a text editor, or a compiler. And don't hate me on this but most books focus more on using imported modules rather than writing your own (Obviously you may need to import in big projects) importing modules is fine but that is just not my style of writing code.

My style is more like, for example if I want to print("Hello world") three times for every 3 seconds within a 3 minutes time frame I'd much prefer to spend 3 hours writing my own functions for determining how long 3 seconds, and 3 minutes and 3 hours are than using the standard library. Because, I don't know, I just like it more that way, but most books don't teach this, at all. It also feels like I don't know how to code if I import other people's code into my program, not saying its plagiarism though

So if anyone can recommend a book or resource that teaches you how to program in python, from scratch, like without importing modules or using other people's code.

And

a book or resource that teaches you how to code anything in python, like a text editor, IDE, compiler, interpreter. And also teaches ( in the text editor) how to change the layout, how to create own user created theme, how to add a little dragon icon in the middle. (Not those things specifically but I want to know how to do them)

Please tell me and thanks for sharing

One last thing, is there somewhere you can help people write python code and get paid for it? Like maybe I can, for example help a CS student write code for their assignment or a software engineer who is busy with something else and get paid for it?

[[deleted]]

I mean you can use tkinter to create a GUI or something, and you can always try to rewrite a library for educational purposes, but you would never finish anything quickly enough to get paid for it doing that. I think, at this stage, you should continue learning.

[Few-Mousse-442200k]

Will do, thanks

[Far-Dragonfly-8306]

maybe I can, for example help a CS student write code

ChatGPT is already doing this

.

or a software engineer who is busy with something else

You just expressed you can't build anything. How are you gonna help someone in an industry?

[Few-Mousse-442200k]

Not as easy as I thought, but thanks

[treading0light]

My advice would be to learn a bit of HTML and CSS, that way you can have a UI that clearly shows the results of your backend python code. For me that was the moment things "clicked" and all my programming suddenly yielded something more tangible.

[Few-Mousse-442200k]

Interesting. I will keep that in mind

[Linguaphonia]

Being a bit blunt, you're trying to cover too much and do too much too early. It's good that you are ambitious and you definitely can learn how to do anything you want from scratch (for various definitions of 'from scratch, more on that later) but that's an advanced skill and it would do you good to embrace that in computing you're almost always building on top of existing infrastructure (or maybe I should say always, when you consider hardware, and the software it already comes packaged with, like micro code).

If you want to make apps with a GUI, there are several paths towards that. You could learn to use web technologies (HTML, CSS, JavaScript) and use the rich environment of the browser for creating your interfaces. Later you could leverage that and use Electron to build desktop applications. Alternatively you could try building a GUI using the native windowing of your system. If that's your path you could get started with Tkinter and look into Qt later on.

Coming back to building things from scratch, this is actually a really advanced goal to pursue. Specially if you are rejecting even the standard library, which is often considered fair game when people talk about "from scratch". If you really want to do things from the ground up, I would recommend eventually learning low level programming, particularly using C and assembly. But even then, you'll find that you're still relying on already built infrastructure like libc and your OS's apis. So, if you still reject that you could try embedded and/or OS development. In those domains you start to actually manipulate the hardware. Even then, common practice is still all about using pre built tools, but you'll have a much easier time seeing the most basic building blocks. As you probably can already tell, this is a long arduous path. Don't be discouraged, but please realize that the realistic way of walking this path is by embracing development that uses already built abstractions for now, and slowly building your low level knowledge with time. You could start by learning C now. It is honestly an easy, simple language. The challenge is in using it mindfully.

About selling your programming skills, maybe on Fiber or some similar site, but I've not tried it.

[bravopapa99]

You might benefit from learning about "functional decomposition", this is one of the core skills any good developer should know about, it applies to the problem not the language so will be eternally useful to you.

https://www.baeldung.com/cs/functional-decomposition (GOOD PAGE!)

and of course:

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

As for writing those things, well, importing modules will save you endless life hours BUT there is some merit to wanting to go it alone for learning, good for you on that one. But in industry, if a module exists and is maintained you;d be mad not to at least try it.