1. Replit

Website: https://replit.com
Features: Replit is a popular, fully-featured IDE that allows you to run Python code online and even collaborate with others in real-time.
Getting Started:
Go to Replit and sign up (or log in).
Click Create and select Python as your language.
Write your Python code and click Run to execute it.

2. Google Colab

Website: https://colab.research.google.com
Features: Google Colab is a free Jupyter notebook environment, making it ideal for data science and machine learning tasks as it includes free access to GPUs.
Getting Started:
Go to the Colab website and sign in with your Google account.
Click File > New Notebook to start a new Python notebook.
Write and execute code in cells, with outputs shown directly below.

3. PythonAnywhere

Website: https://www.pythonanywhere.com
Features: PythonAnywhere is a cloud-based Python IDE and web hosting service that offers a free tier.
Getting Started:
Sign up and log in to PythonAnywhere.
Go to the Consoles tab, select Python, and you’ll be provided with a console to run your Python code.

4. Programiz Online Compiler

Website: https://www.programiz.com/python-programming/online-compiler
Features: Programiz provides a simple online compiler for running quick Python scripts.
Getting Started:
Go to Programiz and enter your Python code in the editor.
Click Run to see the output instantly.

5. CodeSignal

Website: https://codesignal.com
Features: CodeSignal is an online platform for coding practice and interviews, supporting Python and many other languages.
Getting Started:
Sign up and create an account.
Go to Arcade or Practice sections, choose Python and start coding.