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Python List Tuple and Set

In Python, lists, tuples, and sets are all data structures that can be used to store collections of data.

List

 

  • Definition: A list is an ordered collection of items that are mutable (i.e., you can change their contents).
  • Syntax: Lists are defined using square brackets [].
  • Characteristics:
    • Allows duplicate elements.
    • Elements can be of different data types.
    • Supports indexing and slicing.
    • Commonly used methods: append(), extend(), insert(), remove(), pop(), clear(), index(), count(), sort(), reverse().




Tuple

 

  • Definition: A tuple is an ordered collection of items that are immutable (i.e., you cannot change their contents after creation).

  • Syntax: Tuples are defined using parentheses ().

  • Characteristics:

    • Allows duplicate elements.
    • Elements can be of different data types.
    • Supports indexing and slicing.
    • Fewer built-in methods compared to lists (e.g., count(), index()).


Set

 

  • Definition: A set is an unordered collection of unique items.
  • Syntax: Sets are defined using curly braces {} or the set() function.
  • Characteristics:
    • Does not allow duplicate elements.
    • Elements can be of different data types.
    • Does not support indexing or slicing (because it is unordered).
    • Commonly used methods: add(), update(), remove(), discard(), pop(), clear(), union(), intersection(), difference(), symmetric_difference().

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