Python Quiz (Programming )– 4th Week Quiz Solution

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Python Programming 4rd Week Quiz Solution

[1] Which of the following is the correct way to declare a dictionary in python

•  (a): dict = {“key”:”value”}
• (b): dict [“key”:”value”]
• (c): Dict = {“key” – “value”}
• (d): Dict = [“key”:”value”]

Answer: (a) dict = {“key”:”value”}

[2] We have an empty dictionary declared as dict = {}. Which of the following is correct way to add key-value pairs in it.

• (a): dict[‘value’] = ‘key’
• (b): dict[‘key’] = ‘value’
• (c): dict.append(‘key’)=’value’
• (d): None of the above

Answer: (b) dict[‘key’] = ‘value’

[3]  In python, Which is the correct way to remove an element from the dictionary

• (a):

  d = {‘a’: ‘first’, ‘b’: ‘second’}

  del d[‘b’]

  print (d)

• (b):

  d = {‘a’: ‘first’, ‘b’: ‘second’}

  remove d[‘b’]

  print (d)

• (c): d = {‘a’: ‘first’, ‘b’: ‘second’}

  print (del d[‘b’])

• (d): None of the above

Answer: (a)  d = {‘a’: ‘first’, ‘b’: ‘second’}

del d[‘b’]

print (d)

[4] In python, One can set the default value in get() function to be returned if key does not exist in dictionary

• (a): True
• (b): False

Answer: (a) True

[5] Which of the following function is used to get all the keys in a dictionary in python

• (a): getkeys()
• (b): get_keys()
• (c): keys()
• (d): keysvalue()

Answer: (c) keys()

[6]  Can we can add a dictionary to a list and similarly add a list to a dictionary

• (a): True
• (b): False

Answer: (a) True

[7]  Which of the following is false for dictionaries

• (a):Unordered set of key, value pair
• (b): ordered set of key, value pair
• (c): Keys are always unique
• (d): None of the above

Answer: (b) ordered set of key, value pair

Also See: Python Programming Quiz – 3rd Week Quiz Solution

[8] Which of the following is used to iterate over keys in dictionaries

• (a): dict.keys()
• (b): dict.get(key,value)
• (c): for k in dict
• (d): All of the above

Answer: (c) for k in dict

[9] Which of the following function is used to get the sorted list

• (a): list1.sort()
• (b): list1.sorted()
• (c): list1.sorting()
• (d): list1.sortlist()

Answer: (b) list1.sort()

[10] What will be the output of the following code dict = { x:x for x in range(1,3) }

• (a): {}
• (b): {x:x,x:x,x:x}
• (c): {1: 1, 2: 2}
• (d): None of the above

Answer:(c) {1: 1, 2: 2}

[11] Which of the following is true in python

• (a): input is given using input function
• (b): input function takes one argument
• (c): input pauses the program to take input from user
• (d): All of the above

Answer: (d) All of the above

[12] In python 3.x, what will be the type of age variable in the following code: age = input (“Please enter your age”)

• (a): String
• (b): Integer
• (c): Whatever type is given to it
• (d): None of the above

Answer: (a) String

[13] What will be the output of the following program

int =5
while int >=2:
print (int)
int = int -1

• (a): 4 3 2
• (b): 5 4 3 2
• (c): 5 4 3
• (d): 5 4 3 2 1

Answer:(b) 5 4 3 2

[14]  Can a break statement be used to exit a while loop?

• (a): True
• (b): False

Answer:(a) True

[15] What will be the output of the following program

int =3

while int >=2:

    print (int)

    int -= 1

• (a): 3
• (b): 2
• (c): 3 2
• (d): Error in code

Answer:(c) 3 2

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