Python-datastructures

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"In computer science, a data structure is a data organization, management, and storage format that enables efficient access and modification. More precisely, a data structure is a collection of data values, the relationships among them, and the functions or operations that can be applied to the data."

-- source: Wikipedia


Examples of data structures:

  • [61, 22, 53, 48, 27]
  • {"id": 324, "type": 4, "size": 19}


Python knows how to work with of several types of data structures without the need to import additional libraries. Sometimes you do need to import a library to provide support (e.g. json, csv, sql) but most of these are already available when you have python installed. In rare cases you may need to build or acquire a third-party library for data structure support.


In these pages we mainly look at the most common data structures in python:


Name Example Details
Tuple ('January', 'February', 'March', 'April') Once set, values cannot be changed.

Referenced with index

List [1, 2, 3, 4, 5] Values can be modified, added, deleted.

Referenced with index

Dictionary d Values can be modified, added, deleted

Referenced with a key

Array array example details