Slicing is a powerful technique in Python used to extract a subset of elements from a list. This is done by specifying a range within square brackets using the format [start:stop:step].

Start Index: Specifies where the slice begins (inclusive). If omitted, it defaults to 0.
Stop Index: Specifies where the slice ends (exclusive). If omitted, it defaults to the length of the list.
Step: Determines the interval between elements. A positive step moves forward, while a negative step allows for slicing in reverse. If omitted, it defaults to 1.

This technique is useful for extracting segments of data, reversing lists, or skipping elements at regular intervals.

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