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Insights and applications of OR for the everyday reader. We publish articles on how to solve problems, improve decision-making, case studies, interviews, and tutorials. Accepting writers. ORB is a commercial subsidiary of Global Institute for Optimization TM 24'

Learn Python Programming with Examples — Post#5

List, Tuple, Dict and Set keywords usage.

5 min readFeb 10, 2024

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The four keywords (‘list’, ‘tuple’ , ‘dict’, ‘set’ keywords) for the important form of grouping items, numbers or objects in the Python programming environment.

Previous Post Practice Problem Program solution

Before discussing content of this post, it is considered a good idea to give the program solution of the previous post practice problem. View a version of the program solution given below:

Python-nsqsum-Screen-Shot#0-for-Post#5
Python-nsqsum-Screen-Shot#0-for-Post#5

The ‘list’ keyword usage

In Python, a list of numeric values or items are enclosed within the square brackets (‘[ ]’). A list in Python is an ordered and mutable (meaning the values in a list can be changed as needed). The ‘List’ keyword in Python is the most used keyword among the various collection of items usage.

Python-list-usage1-Screen-Shot#1-for-Post#5
Python-list-usage1-Screen-Shot#1-for-Post#5

Notes: An element of item of a list can be accessed by using the sequence number count starting at ‘0’ of the given list content in the same ascending order of the given sequence within the list. For example, the third element ‘3’ of the ‘alist’ in the…

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Operations Research Bit
Operations Research Bit

Published in Operations Research Bit

Insights and applications of OR for the everyday reader. We publish articles on how to solve problems, improve decision-making, case studies, interviews, and tutorials. Accepting writers. ORB is a commercial subsidiary of Global Institute for Optimization TM 24'