23. Tuples and dictionaries
Tuples and dictionaries are foundational data structures in Python that allow for the storage and manipulation of multiple values. Tuples are immutable sequences, while dictionaries provide a flexible way to associate keys with values using more complex types, such as strings. Understanding these structures enhances a programmer's ability to handle data efficiently in Python applications.
Sections
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What we have learnt
- Tuples are immutable sequences that cannot be altered after creation.
- Dictionaries store values associated with unique keys and allow for easy data retrieval.
- The order of keys in a dictionary is not guaranteed and may vary; sorted access is necessary for predictable processing.
Key Concepts
- -- Tuple
- An immutable sequence type in Python that can hold multiple values.
- -- Dictionary
- A mutable associative array in Python that associates keys with values, allowing for flexible data organization.
- -- Mutable vs Immutable
- Mutable types can be changed after they are created (e.g., lists, dictionaries), whereas immutable types cannot (e.g., tuples, strings).
- -- Keys and Values
- In a dictionary, keys are unique identifiers for values, which can be accessed and modified using these keys.
Additional Learning Materials
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