Explain the difference between lists and tuples.

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In Python, lists and tuples are both used to store collections of items, but they have key differences in mutability, performance, and usage.

1. Mutability:

• List: Mutable — you can change, add, or remove elements after the list is created.

• Tuple: Immutable — once a tuple is created, it cannot be modified.

2. Syntax:

• List: Defined using square brackets [ ].

• Tuple: Defined using parentheses ( ).

3. Performance:

• Tuples are generally faster than lists due to their immutability, making them a better choice for fixed data.

4. Use Cases:

   • Lists are used when the data is likely to change (e.g., user inputs, dynamic data).

   • Tuples are used when the data should not change (e.g., coordinates, fixed settings, dictionary keys).

5. Memory Usage:

• Tuples use slightly less memory than lists, making them more memory-efficient.

      6. Methods:

• Lists have more built-in methods like .append(), .remove(), .sort().

• Tuples have fewer methods — primarily .count() and .index().

In summary, use lists when you need a mutable sequence and tuples when you want an immutable, faster, and safer data structure.

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