Python for Machine Learning Great Learning – Quiz Answers

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Question 1: All of the characters of a string “my_string” can be changed to uppercase using the function:

• my_string.upper()
• my_string.lower()
• my_string.allupper()
• my_string.alllower()

Question 2: my_string= ‘Smile smile s s’

my_string.count(‘s’)

The output for the following would be:

• 2
• 3
• 4
• 5

Question 3: Tuples are immutable

• True
• False

Question 4: tup1=(1,2,3,4,5,”a”,”b”)

tup1=[1:4]

Output for the following code will be:

• (1,2,3,4,5)
• (2,3,4,5,6)
• (2,3,4,5)
• (3,4,5,’a’)

Question 5: tup1=(2,3)

tup2=(4,5,6)

tup2 + tup1

Output for the following code will be:

• (1,2,3,4,5,6)
• (4,5,6,2,3)
• (4,1,5,2,6,3)
• (4,5,6)

Question 6: l1=[1,2,3,4]

l1.append(“Noice”)

Output for the following code will be:

• [1,2,3]
• [1,2,3,4]
• [1,2,3,4,’Noice’]
• [1,2]

Question 7: A list can be sorted using:

• descend()
• sort()
• ascend()
• None of the above

Question 8: l1=[1,2,3,”apple”,”banana”]

l1*3

The output for the following code will be:

• [1,2,3,’apple’,’banana’,1,2,3,’apple’,’banana’,1,2,3,’apple’,’banana’]
• [1,2,3,’apple’,’banana’]
• [1,2,3,’apple’,’banana’,1,2,3,’apple’,’banana’]
• [1,2,3,’apple’,’banana’,1,2,3,’apple’,’banana’,1,2,3,’apple’,’banana’,1,2,3,’apple’,’banana’]

Question 9: fruit={“Apple”:20, “Mango”:30, “Banana”:40}

fruit[“Grapes”]=50

Fruit

Output for the following code will be:

• {‘Mango’:30, ‘Banana’:40}
• {‘Apple:20, ‘Mango’:30, ‘Banana’:40}
• {‘Apple:20, ‘Mango’:30, ‘Banana’:40, ‘Grapes’:50}
• {‘Apple’:20, ‘Mango’:30}

Question 10: Suppose B is a subclass of A, to invoke the __init__ method in A from B, what is the line of code you should write?

• A.__init__(self)
• super(B, self).__init__()
• A.__init__(B)
• B.__init__(A)

Question 11: A_____________ in python is mutable.

• list
• tuple.

Question 12: A___________ cannot have duplicate items.

• list
• set