DIctionary

Dictionaries are also called _____

• mappings

• hashes

• associative arrays

• all of the above

Which of the following will raise an error if the given key is not found in the dictionary ?

• del statement

• pop()

• getitem()

• all of these

What type of error will occur when the following code is run?

myDict = {"Sam": 100, "Nak": 99, "Paul": 99, "Ronnie": 99}

print(myDict["Hemant"])

• ValueError

• KeyError

• Typeerror

• Syntaxerror

What will be the output of the following code:

dict1 = {}

d2 = dict1.fromkeys(["key1", "key2", "key3"], ["value"])

print(d2)

• {‘key1’ : ‘value’ , ’key2’ : ’value’, ‘key3’ : ’value’}

• {‘key1’ : ‘value’ , ’key2’ : ’none’, ‘key3’ : ’none’}

• {‘key1’ : [‘value’] , ’key2’ : None, ‘key3’ : None}

• {‘key1’ : [‘value’] , ’key2’ : [‘value’] , ‘key3’ : [‘value’]}

The keys and values of a dictionary are:

• mutable, immutable

• immutable, mutable

• both immutable

• both mutable

What will be the output of the following code:

d = {"Inception": "Christopher Nolan",

"Endgame": "Russo Brothers",

"No Way Home": "Jon Watts"}

for i in d:

print(i)

• Inception: Christopher Nolan

  Endgame: Russo Brothers

  No Way home: Jon Watts

• Inception

  Endgame

  No Way Home

• Inception

  Endgame

  No Way Home

• Error

Dictionary are set of elements

• sorted

• ordered

• unordered

• random

Which of the following functions will return the key, value pairs of a dictionary?

• keys

• values

• items

• all of the above

Identify the type of error:

dict1 = {"Iron Man":"Tony Stark", "Spider-man": "Peter Parker", "Hulk": "Bruce Banner", "Hawkeye": "Clint Barton"}

for hero, name in dict1:

print(hero+"'s", "real name is", name)

• ValueError

• Typeerror

• Syntaxerror

• Logicalerror

What would the following code print?

d = {'spring': 'autum', "autumn": "fall", "fall":"spring"}

print (d["autumn"])

• autumn

• fall

• spring

• error