Dictionary Quiz 1

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Dictionary Quiz 1

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What will be the output of the following Python code snippet? d = {"john":40, "peter":45} print(list(d.keys())) *

1 point

[“john”, “peter”]

[“john”:40, “peter”:45]

(“john”, “peter”)

(“john”:40, “peter”:45)

What will be the output of the following Python code snippet? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 == d2 *

1 point

True

False

None

Error

What will be the output of the following Python code snippet? d = {"john":40, "peter":45} d["john"] *

1 point

“john”

“peter”

Suppose d = {“john”:40, “peter”:45}, to delete the entry for “john” what command do we use? *

1 point

d.delete(“john”:40)

d.delete(“john”)

del d[“john”]

del d(“john”:40)

Suppose d = {“john”:40, “peter”:45}. To obtain the number of entries in dictionary which command do we use? *

1 point

d.size()

len(d)

size(d)

d.len()

Which of the following is not a declaration of the dictionary? *

1 point

{1: ‘A’, 2: ‘B’}

dict([[1,”A”],[2,”B”]])

{1,”A”,2”B”}

{ }

What will be the output of the following Python code snippet? a={1:"A",2:"B",3:"C"} print(a.get(1,4)) *

1 point

Invalid syntax for get method

Which of these about a dictionary is false? *

1 point

The values of a dictionary can be accessed using keys

The keys of a dictionary can be accessed using values

Dictionaries aren’t ordered

Dictionaries are mutable

What will be the output of the following Python code snippet? d1 = {"john":40, "peter":45} d2 = {"john":466, "peter":45} d1 > d2 *

1 point

True

False

Error

None

Suppose d = {“john”:40, “peter”:45}, what happens when we try to retrieve a value using the expression d[“susan”]? *

1 point

Since “susan” is not a value in the set, Python raises a KeyError exception

It is executed fine and no exception is raised, and it returns None

Since “susan” is not a key in the set, Python raises a KeyError exception

Since “susan” is not a key in the set, Python raises a syntax error

What will be the output of the following Python code snippet? a={1:"A",2:"B",3:"C"} for i, j in a.items(): print(i, j, end=" ") *

1 point

1 A 2 B 3 C

1 2 3

A B C

1:”A” 2:”B” 3:”C”

Which of the following statements create a dictionary? *

1 point

d = { }

d = {"Amit":56, "Vinay":34}

d = {56 : "Amit", 34:"Vinay"}

All of the mentioned

What will be the output of the following Python code snippet? d = {"john":40, "peter":45} "john" in d *

1 point

True

False

None

Error

Which of the following isn’t true about dictionary keys? *

1 point

More than one key isn’t allowed

Keys must be immutable

Keys must be integers

When duplicate keys encountered, the last assignment wins

What will be the output of the following Python code snippet? d = {"john":40, "peter":45} *

1 point

"john", 40, 45 and "peter"

"john" and "peter"

40 and 45

d = (40: "john", 45:"peter")

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