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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?
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A list can only contain elements of the same data type.
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How would you access the first element of a list named 'list1'?
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What is the output of the following code: print(list1) where list1 = [2, 4, 6, 8, 10, 12]?
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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.
