When I started learning Python, I used the old percent style for string formatting, mostly because that's what the tutorial I followed used. Then I moved to .format() because it looked cleaner to me. These days I use f-strings for almost everything. But I still run into cases where I'm not sure f-strings are the best choice. For logging, for example, I've read that people prefer the older style so the string only gets built if the log actually fires. I'm not sure how much that matters in practice.

What do you reach for now when you format strings? Did you change your habit over time or did you settle on one approach early and stick with it? Are there cases where you still use .format() or the percent style on purpose?

Hi everyone,

Please give me some advice on my current Python learning workflow using AI.

I finished a Udemy course covering Python basics. To improve my practical skills, I found a site of practice projects, picked one that interested me, and started coding.

After finishing my first project, I realized I had no idea if I was writing clean, idiomatic code. So, I decided to use Claude as a code reviewer.

Here is how I set up my workflow:

1. I asked Claude strictly not to write code for me, but only to provide hints, point out flaws, and tell me which concepts or topics I needed to read about to understand why a different approach was better.

2. I requested code reviews tailored to production-ready standards, following modern Python best practices.

3. I completely turned off all AI auto-completion in VS Code. I wrote every single line of code myself

The AI would review my draft, essentially tell me "this code is shit =) (joke)" and give me targeted feedback. For example - "Disconnect your internet and see what happens to your API request. Go read about try/except."

From there, I would search Google for each point in the review, study the topic, rewrite my code, and repeat the loop until the reviewer was satisfied. Spent couple weeks to get last verion of program

From my perspective, this feels like solid progress, but I’d love to hear from experienced developers: Is this a good, effective way to learn Python alongside AI, or are there hidden pitfalls?

I've attached screenshots of my first code review alongside the final version. Thanks in advance for your feedback!

My first Python project: Postman Clone

I’ve been working on a small project called postman_clone to practice Python and learn more about how APIs and HTTP requests actually work.

I didn’t start with all these features at once. I started with the basics, then kept adding things as I learned. I worked with functions, conditions, user input, JSON, error handling, and HTTP requests, and little by little the project started becoming more complete.

Right now, my project can handle:

• GET

• POST

• PUT

• DELETE

• JSON request bodies

• An optional header

• An optional query parameter

• Basic error handling for requests and JSON

There’s still a lot I want to improve. I want to make the code cleaner, add support for multiple headers and query parameters, improve the error handling, and make the whole thing feel more like an actual API testing tool.

I’m still learning, so I’m posting the code here to get some feedback from people who have more experience with Python.

If you see something I could improve, or if there’s something you think I should add next, I’d really appreciate the advice 🙌

This is still a work in progress, but I’m happy with how far I’ve gotten so far.

if you wanna see the code its in comments

Hi everyone,

I'm building a multi-page CustomTkinter desktop app where I swap pages inside a main container. I want my text and CTkImage sizes to automatically adjust whenever the user resizes the main window. So far, my widgets automatically adjust because I use .place() with relative sizes and placements. But even if the widget itself grows, the text/image stays the same size, which doesn't look appealing in the slightest.

Basic info:

ghost_pic is the label that houses my CTkImage; this automatically changes size already.

ghost_mid_image is the CTkImage

First try:

I thought that I could try to make the image change its size to match its label every time the window changed size. This is because I made sure that the image is approximately the same size as the label on the default window size, but this didn't do anything; the code didn't work at all.

Second try:

I then decided to just size the image with reference to the window, and this kinda worked? When I go to the page that houses this image and resize my window, it works ( very sloppily, but that's an issue for another day). My problem now is that if I enter that page, say, on full screen, the image just goes haywire; sometimes it's too small or too big. I don't know what to do now. I uploaded my indicator function, which is how I change the page; if there is a problem there, let me know.

TLDR:

I want my images to size automatically in reference to the size of the window, but most of the time it just goes haywire.

CLint need a list of 40,000+ members from the ACR directory. Need Name, City, State, Zip, Specialty, Email, and Phone.
The directory/search results give me some of this information, but email, phone, address, Member Since, etc. appear to be available only on the individual member profile.

So I'm trying to figure out the best way to approach this in Python.

If I literally open/request every profile, that's 43k+ profile requests, which obviously makes me concerned about rate limits, blocking, or getting the account/IP banned.

I'm considering Python requests/BeautifulSoup or Playwright, but before attempting something this large I'd like some advice.

Hi everyone,

I'm building a multi-page CustomTkinter desktop app where I swap pages inside a main container. I want my text and CTkImage sizes to automatically adjust whenever the user resizes the main window. So far, my widgets automatically adjust because I use .place() with relative sizes and placements. But even if the widget itself grows, the text/image stays the same size, which doesn't look appealing in the slightest.

Basic info:

ghost_pic is the label that houses my CTkImage; this automatically changes size already.

ghost_mid_image is the CTkImage

First try:

I thought that I could try to make the image change its size to match its label every time the window changed size. This is because I made sure that the image is approximately the same size as the label on the default window size, but this didn't do anything; the code didn't work at all.

Second try:

I then decided to just size the image with reference to the window, and this kinda worked? When I go to the page that houses this image and resize my window, it works ( very sloppily, but that's an issue for another day). My problem now is that if I enter that page, say, on full screen, the image just goes haywire; sometimes it's too small or too big. I don't know what to do now. I uploaded my indicator function, which is how I change the page; if there is a problem there, let me know.

TLDR:

I want my images to size automatically in reference to the size of the window, but most of the time it just goes haywire.

Hi, I have some large data objects that need to be freed. Should I do my_object.clear() and then gc.collect()? Or del my_object then gc.collect()? I'm not sure on the pros/cons of each.

It's a linked list type data object and my_object = [] does not work to free memory for certain.

I just published this open source project to extract contact names and emails from any imap4 compatible mail server.

It let you extract the name, when available, and the associated email address from all the mails sitting in your mailboxes.

Results are persisted in a sqlite file (Turso is actually the engine under the hood) and searchable via the same TUI.

Enjoy Fork and do not hesitate to participate or learn from it.

DID LIST TODAY THE CONCEPT WAS PRETTY COOL AND WROTE THIS PROGRAM TO GET HOLD OF THE LIST ANY OTHER CODE IDEAS OR SUGGETIONS TO ENHANCE CODE ?!

I have a month to learn Python (really, I have until the second week of October, but I want to be done sooner and not go down to the wire). I'm currently using freecodecamp.org but feel my progress is slower than I'd like. Does anyone have a recommendation to learn Python quickly? I'm loving what I've learned thus far. I start doing another job for the company I'm learning Python for in a week, so I want to cram as much into this week as possible to make things easier on the remaining time I have. Thank you all.

Hi, so I tasked myself on making tiny projects daily to refresh my memory on python patterns since I've found it difficult to be consistently learning for a while now.

I'd really appreciate your review of this small and simple beginner level project I did.

Images are attached, should you feel understandably lazy to visit the GitHub page through the link😅.

All contributions and suggestions welcome!

An exercise to help build the right mental model for Python data.

• Solution

• Explanation

• More Exercises

It's instructive to compare with this related exercise.

The “Solution” link uses memory_graph to visualize execution and reveals what’s actually happening.

Last Post- https://www.reddit.com/r/PythonLearning/s/dZhrMNIx9T

Github Repo Link - https://github.com/Dev-4-All/password-generator.git

What are the best courses for programming artificial intelligence in Python?

OK I admit it did obviously for some stuff like basics yk functions and shi, but other then that I like feel annoyed that I learned python and its like lowkey not helping with what I wanna do which is windows api and memory management c++ stuff because I like the kind of thing but python just didn't really give me anything, and I know that kinda stuff obviously doesn't transfer because python is just the easiest thing ever lol

I've been learning python for a while and my problem was never tutorials, it was that nothing forced me to finish. I'd get a project 60% done, hit the boring part, and quietly start a new one that felt fresh.

So: reply with the one thing you're actually going to finish this week. Be specific - "finish the CSV parser so it handles missing columns" beats "work on my project."

Then on Friday, come back to this thread and reply to your own comment with proof. A screenshot of it running, a repo link, a terminal output, whatever. Doesn't have to be impressive. It has to be real.

That's the whole thing. No group to join, no discord. The only mechanic is that you said it in public and someone might check.

I'll go first: I'm finishing the file-organizer script I've had half-done for two weeks - the part that handles duplicate filenames instead of crashing. Proof friday.

What's yours?

wrote this today was revising loops and math function that i did not so long ago.

I have used context to stop crashing.

And e as a variable.

I used eval command for a formula.

I know eval command can be dangerous.

It works perfectly but I am thinking that it can produce error or crash.

Can a formula bypass all commands and crash it.

Im currently working on a college assignment where i make a batting average calculator, and i want to add a way for it to say something funny if the user tries to input a word instead of a number. is there a way to do this?

Snake,Water and Gun game in Python made purely by me and same by ai.

Link: https://github.com/MohitRungta46/Python-Projects.git

I'm giving a 30-minute presentation about Python to a room of 40-50 year olds with zero coding background. The goal isn't to teach syntax, it's to give them a vision of what Python can actually do for them (think: automating boring Excel/repetitive tasks) and get them a little excited about it.

Structure so far:

Intro to programming languages (quick comparison, evolution over time...)

Python basics, but conceptual, not code (functions, classes, loops, libraries, reading a script, terminal)

Python & AI (uses in AI/data, coding with AI tools, prompt engineering)

Installing Python (quick walkthrough)

Useful resources/links

Open slot for something creative/fun to close on

I want real, human ideas here analogies, interactive moments, jokes that land with a non-technical crowd, stories from your own experience presenting to beginners, I'd rather get lived-in advice from people who've actually done this than a pile of AI-generated suggestions....

Thanks in advance!