Python Quiz 8 Answers 100% correct No UFM

 

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PYTHON Quiz 8 Answers

 

Disclaimer-

This article only attempts to discover some questions that can be generated in PYTHON for Engineering with the answer to all these questions. There can be some errors to these answers. If you find any error then please do write to us.

 

Q1. In python, a class is created by ____ keyword, and to create ____ of the class, we will have to use constructor of class.

1.def, file

2.class, object

3.self, .py file

4.None of these

Reason: In python class is created by keyword ‘class’ and to create’ object ‘of the class and we will use to construct to class

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Q2. What will be the output of the following python code?

class Roll:

    def __init__(self, id):

        self.id = id

        id = 231

        return id

 

val = Roll(321)

print (val.id)

1.TypeError

2.231

3.321

4.None of these

Reason: The program give the type error, Because Roll takes no argument.
In this program constructor give the lines Val=Roll(321) is incorrect

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Q3. What will be the output of following python code?

class X:

    def __init__(self):

         self.a = 10

         self._b = 20

         self.b = 20

    def getB(self):

         return self.b

 

x = X()

x._b = 60

print(x.getB())

1.20

2.60

3.Error

4.Program runs but does not print anything

Reason:  The program has give attribute error
Because ‘X’ object has no attribute ‘b’

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Q4.   Private method in python starts with ____ while protected methods starts with ____ .

1.#, @

2.double underscore, single underscore

3.single underscore, double underscore

4.None of these

Reason:  In a python private method start with double underscore and while start protected with single underscore,

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Q5.  What will be the output of the following code. Code is saved in a file named 'code.py' :

f = open('file.txt')

f.readlines()

print(f.name)

print ( f.closed )

f.close()

print ( f.closed )

1.Error in code

2.true
     false
     true

3.code.py
     False
     True

4.file.txt
     False
     True

 

Reason:  Reason.file.text is not found because the python only open directory or file own libraries and files

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