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Decorator
A higher-order function that wraps another to add behavior — logging, caching, auth. `@cache` is one.
@functools.cache def fib(n): ...
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Open lesson lesson-115 →Related — Functions
FunctionNamed reusable block of code. Defined with `def`. First-class — you can pass fun…Default argumentParameter with a fallback value: `def f(x=10)`. Beware mutable defaults — `def f…*args, **kwargsCapture variable positional and keyword arguments. Lets a function accept any si…LambdaAn anonymous one-line function: `lambda x: x*2`. Use for short callbacks; prefer…ClosureAn inner function that captures variables from its enclosing scope. The captured…