Python Quizz-11

Which of the following statements create a dictionary?

• d = {}

• d = {“john”:40, “peter”:45}

• d = {40:”john”, 45:”peter”}

• All of the mentioned

What will be the output of the following Python code snippet?

d = {"john":40, "peter":45}

print("john" in d)

• True

• False

• None

• Error

d1 = {"john":40, "peter":45}

d2 = {"john":466, "peter":45}

print(d1 == d2)

• True

• False

• None

• Error

d1 = {"john":40, "peter":45}

d2 = {"john":466, "peter":45}

print(d1 > d2)

• True

• False

• Error

• None

d = {"john":40, "peter":45}

print(d["john"])

• 45

• 40

• john

• error

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

• d.size()

• len(d)

• size(d)

• d.len()

d = {"john":40, "peter":45}

print(list(d.keys()))

• [“john”, “peter”]

• [“john”:40, “peter”:45]

• (“john”, “peter”)

• (“john”:40, “peter”:45)

Which of these about a dictionary is false?

• 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

a={1:"A",2:"B",3:"C"}

b=a.copy()

print(b)

• {1:"A",2:"B",3:"C"}

• {1:"A",2:"B",}

• {1:"A",2:"B"}

• Error

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

• More than one key isn’t allowed

• Keys must be immutable

• Keys must be integers

• When duplicate keys encountered, the last assignment wins