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Questions and Answers
What does the repetition operator do when applied to a list and an integer?
What does the repetition operator do when applied to a list and an integer?
- Repeats the list a number of times
- Creates multiple copies of the list and joins them together (correct)
- Multiplies the elements of the list by the specified number
- Creates a new list with the specified number of elements
In the context of indexing, what does the index -1 identify?
In the context of indexing, what does the index -1 identify?
- The last element in the list (correct)
- A non-existent element
- The second element in the list
- The first element in the list
What happens if an invalid index is used with the len function?
What happens if an invalid index is used with the len function?
- The function returns the length of the list
- The program crashes
- The function returns 0
- An IndexError exception is raised (correct)
What is the general format for iterating over a list using a for loop?
What is the general format for iterating over a list using a for loop?
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What is the index of the second element in a list?
What is the index of the second element in a list?
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Study Notes
Sequences
- A sequence is an object that contains multiple items of data.
- Items in a sequence are stored one after another.
- Python provides different types of sequences, including lists and tuples.
Lists
- A list is a type of sequence that can contain multiple data items.
- An item in a list is called an element.
- The format of a list is:
list = [item1, item2, etc.]. - Lists can hold items of different types.
- The
printfunction can be used to display an entire list. - The
list()function can convert certain types of objects to lists.
Lists and Tuples
- The main difference between lists and tuples is that lists are mutable, while tuples are immutable.
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Description
Test your knowledge of lists and tuples in Python with this quiz. Covering topics such as sequences, list slicing, list methods, two-dimensional lists, tuples, and plotting list data with the matplotlib package. Copyright © 2018 Pearson Education, Inc.
