Python Lists and Strings: How Indexing Works for Beginners

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This beginner-focused Python tutorial covers indexing in lists and strings as part of a Module Four series. Lists are mutable, meaning their values can be added, changed, or removed after creation, and indexing allows developers to target and modify specific elements using bracket notation. Strings, while also indexed as sequences of characters, are immutable — attempting to change a character directly will produce an error. Indexing is also a useful debugging tool, letting developers verify what value sits at a particular position. The lesson includes practical code examples, such as updating a grocery list item and accessing individual characters in a name string.

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