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A virtual environment contains an isolated Python installation and package directory, preventing conflicting dependency versions across different projects.

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Aug 12, 2026

Quiz: Why are Python tuples hashable while lists are not?

Because tuples are immutable (their contents cannot change), they produce a fixed hash value and can be used as dictionary keys.

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Aug 30, 2026

Quiz: What is the difference between shallow copy (<code>copy.copy()</code>) and variable assignment in Python?

Variable assignment binds a new symbol to the exact same object identity, whereas a shallow copy constructs a new outer container.

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Aug 08, 2026

Quiz: Which Python keyword is used to define a generator function?

yield turns a regular function into a generator. Each call to next() resumes execution until the next yield .

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Aug 08, 2026

Quiz: What does the <code>*args</code> syntax allow in a Python function?

*args collects any extra positional arguments passed to a function into a tuple.

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Aug 08, 2026

Quiz: In Python, what is a decorator?

A decorator is a callable that receives a function, wraps it with additional behaviour, and returns a new callable.

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