Explanations "Top Python Quiz Questions"
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Explanations "Top Python Quiz Questions"
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What will be output for the code?

1 1 1
2 2 2
3 3 3
1 2 3
3 2 3
Error
None of mentioned

Explanation:
In Python, class variables are internally handled as dictionaries. If a variable name is not found in the dictionary of the current class, the class hierarchy (i.e., its parent classes) are searched until the referenced variable name is found, if the variable is not found error is being thrown.
The output 3 2 3 may be surprising. Instead of 3 3 3, here B.val reflects 2 instead of 3 since it is overridden earlier.
What will be output for the code?

{0: 0, 1: 0, 2: 0}
{0: 1, 1: 1, 2: 1}
{0: 0, 1: 0, 2: 0, 0: 1, 1: 1, 2: 1}
TypeError: Immutable object
Compilation error
None of the mentioned

Explanation:
1st loop will give 3 values to i 0, 1 and 2. In the empty dictionary, valued are added and overwritten in j loop, for eg. D[0] = [0] becomes D[0] = 1, due to overwriting.
What is the output of the code?

TypeError
Code doesn't compile
(1, 5, 3, 4)
1 TypeError
6 TypeError
None of the mentioned

Explanation:
T1 is an integer while T2 is tuple. Thus T1 will become 1 + 5 = 6. But an integer and tuple cannot be added, it will throw TypeError.
What is the output of the code?

D C
E B
D B
KeyError B
E KeyError
None of the mentioned

Explanation:
Key-Value Indexing is used in the example above. D[1] = {‘A’ : {1 : “A”}, 2 : “B”}, D[1][2] = “B”, D[D[1][2]] = D[“B”] = “D” and D[“D”] = “E”. D[1] = {‘A’ : {1 : “A”}, 2 : “B”}, D[1][“A”] = {1 : “A”} and D[1][“A”][2] doesn’t exists, thus KeyError.
What is the result of the code?

3
4
5
Does not compile
None of mentioned

Explanation:
In Python, everything is a reference, and references are passed by value. Parameter passing in Python is the same as reference passing in Java. As a consequence, the function can modify the value referred by passed argument, i.e. the value of the variable in the caller’s scope can be changed. Here the task of the function “addToList” is to add an element 10 in the list, So this will increase the length of the list by 1. So the output of the program is 5.
What is the result of the code?

111
555
666
Code does not compile
Runtime error
None of the above

Explanation:
Instantiation of the class “Acc” automatically calls the method init and passes the object as the self parameter. 111 is assigned to data attribute of the object called id.
The value “555” is not retained in the object as it is not assigned to a data attribute of the class/object. So, the output of the program is “111”
What is the output of the program?

0 2 3 10
32 34 35 42
48 64 72 128
48 144 192 480
Code does not compile
None of the mentioned

Explanation:
An Empty Tuple has 48 Bytes as Overhead size and each additional element requires 8 Bytes.
(1, 2) Size: 48 + 2 * 8 = 64
(1, 3, (4, 5)) Size: 48 + 3 * 8 = 72
(1, 2, 3, 4, 5, [3, 4], ‘p’, ‘8’, 9.777, (1, 3)) Size: 48 + 10 * 8 = 128