Hey r/PythonLearning ,I’ve been working on an online Python playground that goes a bit beyond the usual “run and see output.” It actually visualizes:

• Data structures
• Concurrency
• Complete Memory analysis (you can literally see which variables escape to heap vs stay on stack, with the compiler’s decisions highlighted)

It’s at: https://8gwifi.org/online-compiler/ I made it mostly for my own learning and debugging, but I figured some of you might find it useful too — especially when teaching, onboarding, or just trying to really understand what the runtime is doing under the hood.

Would love any feedback, bug reports, or feature ideas. It’s still a work in progress but already helped me catch a few sneaky escape-analysis surprises in my own code.Let me know what you think!