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Online Python 3 Compiler and Playground

Browser-based compiler and playground for Python 3 — Progsity IDE.

About Python 3

Python 3 is one of the most readable languages for beginners yet powerful enough for data science, automation, and web backends. Running Python in the browser means you can experiment with syntax, standard library snippets, and small scripts without installing anything locally.

This playground uses a real Python 3 runtime in a secure sandbox: your code executes server-side and returns stdout, stderr, and resource metrics. It is ideal for learning control flow, working with lists and dictionaries, and testing algorithms before you move them into a larger project.

Use the editor for quick experiments, interview prep, and teaching moments. When you are signed in, you can save snippets and share links—so you can revisit or show your work without emailing zip files.

How to use

  1. Write or paste Python in the editor. You can start from the default “Hello, World!” or load a “Try this” example below.
  2. Add stdin in the panel if your program uses input(). Then press Run (or Ctrl/Cmd+Enter).
  3. Read stdout and stderr in the output panel. Adjust your code and run again until you get the result you want.

FAQ

Is this Python playground free?

Yes. Running code in the playground is free. Saving snippets to your account may have limits on the free tier; upgrading via Quiz or Course subscriptions unlocks higher IDE limits.

Can I save my Python code?

After you sign in, you can save snippets, open them from your dashboard, and share read-only links. Anonymous visitors can still run code without an account.

What Python version runs here?

The playground targets Python 3 compatible with our Judge0-backed runtime (commonly Python 3.x). For version-specific behavior, run a small snippet that prints sys.version.

Compiler or playground—which is this?

Python is interpreted; here you get an online compiler-style experience: write code, run once, and see output instantly—classic “playground” workflow for learning and sharing.

Does it work on mobile?

Yes, but typing long programs on a phone is awkward. A laptop or tablet with a keyboard gives the best experience.

Code examples

Tap “Try this” to load sample code into the editor above.

  • Sum two numbers

    a = int(input())
    b = int(input())
    print(a + b)
  • List comprehension

    squares = [x * x for x in range(1, 6)]
    print(squares)
  • FizzBuzz (1–15)

    for i in range(1, 16):
        s = ""
        if i % 3 == 0:
            s += "Fizz"
        if i % 5 == 0:
            s += "Buzz"
        print(s or i)
  • Read lines from stdin

    import sys
    lines = sys.stdin.read().strip().splitlines()
    print(len(lines), "lines")