Learn Python by writing code and visualizing execution
This free educational application allows teachers and students to write Python scripts directly in the web browser, execute those scripts, single-step forwards and backwards through execution, and view the run-time state of all data structures.
Rather than displaying a bland text-based console, the Online Python Tutor provides a rich visualization of variables, heap objects, and stack frames. For example, the following code:
x = ["Alice", "Bob", "Charlie"] y = x z = ["Alice", "Bob", "Charlie"]
will be visualized as the following HTML diagram, which properly shows aliasing relationships:
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