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Why Membership Testing in Python range() Is So Fast

Learn why `x in range(...)` is fast in Python 3, how range membership works internally, and why it avoids generating all values.

pythonperformancepython-3.xrange

__str__ vs __repr__ in Python: What’s the Difference?

Learn the difference between __str__ and __repr__ in Python, when each is used, and how to implement both with clear examples.

pythonmagic-methodsrepr

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