Python Dictionary, Tuple and Sets

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Question 1

Find the output of the following program:

Python 
d = {"geek":10, "for":45, "geeks": 90} 
print("geek" in d)

  • 10

  • False

  • True

  • Error

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Question 2

What is the output of the following program?

Python 
li = [2e-04, 'a', False, 87] 
tup = (6.22, 'boy', True, 554) 
for i in range(len(li)): 
	if li[i]: 
		li[i] = li[i] + tup[i] 
	else: 
		tup[i] = li[i] + li[i] 
		break

  • [6.222e-04, ‘aboy’, True, 641]

  • [6.2202, ‘aboy’, 1, 641]

  • TypeError

  • [6.2202, ‘aboy’, False, 87]

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Question 3

What is the output of the following program?

Python 
import sys 
tup = tuple() 
print(sys.getsizeof(tup), end = " ") 
tup = (1, 2) 
print(sys.getsizeof(tup), end = " ") 
tup = (1, 3, (4, 5)) 
print(sys.getsizeof(tup), end = " ") 
tup = (1, 2, 3, 4, 5, [3, 4], 'p', '8', 9.777, (1, 3)) 
print(sys.getsizeof(tup))

  • 0 2 3 10

  • 32 34 35 42

  • 48 64 72 128

  • 48 144 192 480

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Question 4

What is the output of (1, 2, 3) + (4, 5, 6)?

  • (1, 2, 3, 4, 5, 6)

  • (5, 7, 9)

  • TypeError

  • (1, 2, 3, (4, 5, 6))

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Question 5

What happens if we try to assign a value to an element in a tuple?

  • The tuple is updated.

  • Nothing happens.

  • An error is raised.

  • The tuple is converted to a list.

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Question 6

Which of the following is a correct statement about tuple unpacking?

  • x, y, z = (1, 2, 3) is an invalid statement.

  • Tuple unpacking requires more variables than the elements in the tuple.

  • Tuple unpacking can be done without matching the exact number of elements

  • x, y, z = (1, 2, 3) unpacks the values into x, y, and z

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Question 7

What is the output of tuple(map(lambda x: x*x, [1, 2, 3]))?

  • [1, 4, 9]

  • (1, 4, 9)

  • {1, 4, 9}

  • None

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Question 8

What does the following tuple comprehension do? tuple(x for x in range(5))

  • Creates a tuple with elements 0 to 4.

  • Generates an error.

  • Creates a list instead of a tuple.

  • None of the above.

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Question 9

Which of the following is the correct way to create a set in Python?

  • s = {1, 2, 3}

  • s = [1, 2, 3]

  • s = (1, 2, 3)

  • s = {1: "one", 2: "two", 3: "three"}

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Question 10

What is the output of the following code?

Python 
s = {1, 2, 3}
s.add(4)
print(s)

  • {1, 2, 3}

  • {1, 2, 3, 4}

  • {1, 4}

  • Error

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