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🎮 Python Internals (Practice)

Companion to the Python Internals & NumPy Memory guide. See how Python object identity and mutability actually behave. Edit and run the code right here — it executes in your browser.

🐍 Your turn​

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🧠 Challenge yourself​

  1. Show that list * on nested lists shares references (the classic gotcha).
  2. Use sys.getsizeof to compare a list vs a generator.
  3. Why does NumPy's contiguous memory make vectorized ops fast?

Continue the learning path → Recursion And Call Stack