Starting Out with Python, 3e Ch 9

This operator can be used to find the intersection of two sets. a. I b. & c. - d. ^

&

This operator can be used to find the difference of two sets. a. I b. & c. - d. ^

-

A list can be a dictionary key. T or F

False

The dictionary method popitem does not raise an exception if it is called on an empty dictionary. T or F

False

The following statement creates an empty set: myset = ( ) T or F

False

The keys in a dictionary must be mutable objects. T or F

False

You can store duplicate elements in a set. T or F

False

This operator can be used to find the union of two sets. a. I b. & c. - d. ^

I

A tuple can be a dictionary key. T or F

True

Dictionaries are not sequences. T or F

True

Sets store their elements in an unordered fashion. T or F

True

The following statement creates an empty dictionary: mydct = { } T or F

True

The remove method raises an exception if the specified element is not found in the set. T or F

True

This operator can be used to find the symmetric difference of two sets. a. I b. & c. - d. ^

^

You can add one element to a set with this method. a. append b. add c. update d. merge

add

This set method removes an element but does not raise an exception if the element is not found. a. remove b. discard c. delete d. erase

discard

The ____ dictionary method returns the value associated with a specified key. If the key is not found, it returns a default value. a. pop( ) b. key( ) c. value( ) d. get( )

get( )

You can use the ____ operator to determine whether a key exists in a dictionary. a. & b. in c. ^ d. ?

in

The ____ method returns all of a dictionary's keys and their associated values as a sequence of tuples. a. keys_values( ) b. values( ) c. items ( ) d. get( )

items ( )

The ____ function returns the number of elements in a dictionary: a. size( ) b. len( ) c. elements( ) d. count( )

len( )

The following function returns the number of elements in a set: a. size( ) b. len( ) c. elements( ) d. count( )

len( )

The ____ method returns the value associated with a specified key and removes that key-value pair from the dictionary . a. pop( ) b. random( ) c. popitem( ) d. rand_pop( )

pop( )

The ____ method returns a randomly selected key-value pair from a dictionary. a. pop( ) b. random( ) c. popitem( ) d. rand pop( )

popitem( )

This set method removes an element and raises an exception if the element is not found. a. remove b. discard c. delete d. erase

remove

You use ____ to delete an element from a dictionary. a. the remove method b. the erase method c. the delete method d. the del statement

the del statement

You can add a group of elements to a set with this method. a. append b. add c. update d. merge

update

You can use ____ to create an empty dictionary. a. { } b. ( ) c. [ ] d. empty( )

{ }