Introduction to Lists in Programming
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Questions and Answers

What is a list in programming?

An ordered sequence that is mutable and can contain elements of different data types.

What characters are used to enclose elements in a list?

Square brackets

What is an example of a list containing different data types?

[100, 23.5, 'Hello']

Which of these is true regarding list indexing?

<p>The first index value is 0</p> Signup and view all the answers

A list can only contain elements of the same data type.

<p>False</p> Signup and view all the answers

How would you access the first element of a list named 'list1'?

<p>list1[0]</p> Signup and view all the answers

What is the output of the following code: print(list1) where list1 = [2, 4, 6, 8, 10, 12]?

<p>[2, 4, 6, 8, 10, 12]</p> Signup and view all the answers

Study Notes

Introducing Lists

  • A list is an ordered sequence of elements that can be modified (mutable).
  • Lists can contain elements of different data types (integers, floats, strings, tuples, other lists)
  • Elements are enclosed in square brackets [] and separated by commas.
  • Example: [2, 4, 6, 8, 10, 12] is a list of six even numbers.

Accessing List Elements

  • Each element in a list has an index, starting from 0 for the first element.
  • Use square brackets [] with the desired index to access an element.
  • Example: list1[0] returns the first element, list1[3] returns the fourth element.
  • Negative indices can be used to access elements from the end of the list. list1[-1] returns the last element.

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Description

This quiz covers the basics of lists, an essential data structure in programming. You will learn about creating lists, accessing elements by index, and understanding the mutability of lists. Test your knowledge on lists with practical examples and explanations.

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