Starting Out with Python (4th Edition)
4th Edition
ISBN: 9780134444321
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 9.1, Problem 7CP
Suppose a dictionary named inventory exists. What does the following statement do?
del inventory[654]
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Exercise: Check Monster Character Exists
Description
In this series of exercises, you will create functions
to create, modify and examine dictionaries that
represent characters in an animated film, and the
cast members who voice the characters. The
keys of the dictionary will be character names.
The values in the dictionary will be voice actor
names.
For this exercise, you will create a function that
checks if a character is already in the dictionary.
Files
monsterfunctions.py : set of functions to work with monster cast dictionaries.
Function Name
has_character
Parameters
monsters: a dictionary
character: a string, the name of a character
Action
Checks if character is a key in monsters.
Return Value
True if character is a key in monsters, otherwise False.
Examples
monsters = create_monster_cast()
monsters = add_cast_member(monsters, "Mike", "William Crystal")
has_character(monsters, "Mike") -> True
has_character(monsters, "Sully") -> False
Exercise: Check Monster Character Exists
Description
In this series of exercises, you will create functions
to create, modify and examine dictionaries that
represent characters in an animated film, and the
cast members who voice the characters. The
keys of the dictionary will be character names.
The values in the dictionary will be voice actor
names.
For this exercise, you will create a function that
checks if a character is already in the dictionary.
Files
monsterfunctions.py : set of functions to work with monster cast dictionaries.
Function Name
has_character
Parameters
monsters: a dictionary
character: a string, the name of a character
Action
Checks if character is a key in monsters.
Return Value
True if character is a key in monsters, otherwise False.
Examples
monsters = create_monster_cast()
monsters = add_cast_member(monsters, "Mike", "William Crystal")
has_character(monsters, "Mike") -> True
has_character(monsters, "Sully") -> False
Exercise: Check Monster Character Exists
Description
In this series of exercises, you will create functions
to create, modify and examine dictionaries that
represent characters in an animated film, and the
cast members who voice the characters. The
keys of the dictionary will be character names.
The values in the dictionary will be voice actor
names.
For this exercise, you will create a function that
checks if a character is already in the dictionary.
Files
monsterfunctions.py : set of functions to work with monster cast dictionaries.
Function Name
has_character
Parameters
monsters: a dictionary
character: a string, the name of a character
Action
Checks if character is a key in monsters.
Return Value
True if character is a key in monsters, otherwise False.
Examples
monsters = create_monster_cast()
monsters = add_cast_member(monsters, "Mike", "William Crystal")
has_character(monsters, "Mike") -> True
has_character(monsters, "Sully") -> False
Chapter 9 Solutions
Starting Out with Python (4th Edition)
Ch. 9.1 - An element in a dictionary has two parts. What are...Ch. 9.1 - Which part of a dictionary element must be...Ch. 9.1 - Suppose ' start' : 1472 is an element in a...Ch. 9.1 - Suppose a dictionary named employee has been...Ch. 9.1 - What will the following code display? stuff = {1 :...Ch. 9.1 - Prob. 6CPCh. 9.1 - Suppose a dictionary named inventory exists. What...Ch. 9.1 - What will the following code display? stuff = {1 :...Ch. 9.1 - What will the following code display? stuff = {1 :...Ch. 9.1 - What is the difference between the dictionary...
Ch. 9.1 - Prob. 11CPCh. 9.1 - Prob. 12CPCh. 9.1 - What does the values method return?Ch. 9.2 - Prob. 14CPCh. 9.2 - Prob. 15CPCh. 9.2 - Prob. 16CPCh. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - Prob. 22CPCh. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - Prob. 25CPCh. 9.2 - Prob. 26CPCh. 9.2 - After the following code executes, what elements...Ch. 9.2 - Prob. 28CPCh. 9.2 - After the following code executes, what elements...Ch. 9.2 - After the following code executes, what elements...Ch. 9.2 - After the following code executes, what elements...Ch. 9.2 - Prob. 32CPCh. 9.3 - Prob. 33CPCh. 9.3 - When you open a file for the purpose of saving a...Ch. 9.3 - When you open a file for the purpose of retrieving...Ch. 9.3 - Prob. 36CPCh. 9.3 - Prob. 37CPCh. 9.3 - Prob. 38CPCh. 9 - You can use the __________ operator to determine...Ch. 9 - You use ________ to delete an element from a...Ch. 9 - The ________ function returns the number of...Ch. 9 - You can use_________ to create an empty...Ch. 9 - The _______ method returns a randomly selected...Ch. 9 - The __________ method returns the value associated...Ch. 9 - The __________ dictionary method returns the value...Ch. 9 - The ________ method returns all of a dictionary's...Ch. 9 - The following function returns the number of...Ch. 9 - Prob. 10MCCh. 9 - Prob. 11MCCh. 9 - This set method removes an element, but does not...Ch. 9 - Prob. 13MCCh. 9 - Prob. 14MCCh. 9 - This operator can be used to find the difference...Ch. 9 - Prob. 16MCCh. 9 - Prob. 17MCCh. 9 - The keys in a dictionary must be mutable objects.Ch. 9 - Dictionaries are not sequences.Ch. 9 - Prob. 3TFCh. 9 - Prob. 4TFCh. 9 - The dictionary method popitem does not raise an...Ch. 9 - The following statement creates an empty...Ch. 9 - Prob. 7TFCh. 9 - Prob. 8TFCh. 9 - Prob. 9TFCh. 9 - Prob. 10TFCh. 9 - What will the following code display? dct =...Ch. 9 - What will the following code display? dct =...Ch. 9 - What will the following code display? dct =...Ch. 9 - What will the following code display? stuff =...Ch. 9 - How do you delete an element from a dictionary?Ch. 9 - How do you determine the number of elements that...Ch. 9 - Prob. 7SACh. 9 - What values will the following code display? (Dont...Ch. 9 - After the following statement executes, what...Ch. 9 - After the following statement executes, what...Ch. 9 - After the following statement executes, what...Ch. 9 - After the following statement executes, what...Ch. 9 - After the following statement executes, what...Ch. 9 - What will the following code display? myset =...Ch. 9 - After the following code executes, what elements...Ch. 9 - Prob. 16SACh. 9 - Prob. 17SACh. 9 - Prob. 18SACh. 9 - After the following code executes, what elements...Ch. 9 - Prob. 20SACh. 9 - Write a statement that creates a dictionary...Ch. 9 - Write a statement that creates an empty...Ch. 9 - Assume the variable dct references a dictionary....Ch. 9 - Assume the variable dct references a dictionary....Ch. 9 - Prob. 5AWCh. 9 - Prob. 6AWCh. 9 - Prob. 7AWCh. 9 - Prob. 8AWCh. 9 - Prob. 9AWCh. 9 - Prob. 10AWCh. 9 - Assume the variable dct references a dictionary....Ch. 9 - Write code that retrieves and unpickles the...Ch. 9 - Course information Write a program that creates a...Ch. 9 - Capital Quiz The Capital Quiz Problem Write a...Ch. 9 - File Encryption and Decryption Write a program...Ch. 9 - Unique Words Write a program that opens a...Ch. 9 - Prob. 5PECh. 9 - File Analysis Write a program that reads the...Ch. 9 - World Series Winners In this chapters source code...Ch. 9 - Name and Email Addresses Write a program that...Ch. 9 - Blackjack Simulation Previously in this chapter...Ch. 9 - Word Index Write a program that reads the contents...
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