Nucleus Placement Paper -: Python Questions With Answers

Nucleus Previous Years Solved Sample Placement Papers

1. What will be the output of the following Python code snippet?

   
   for i in [1, 2, 3, 4][::-1]:
       print(i, end=' ')
       

   A. 4 3 2 1 Answer: Option A

   B. error

   C. 1 2 3 4

   D. none of the mentioned

2. Solution: [::-1] reverses the list.

3. What will be the output of the following Python statement?

   
   >>> "a" + "bc"
       

   A. bc

   B. abc Answer: Option B

   C. a

   D. bca

4. Solution: + operator is concatenation operator.

5. Which function is called when the following Python program is executed?

   
   f = foo()
   format(f)
       

   A. str()

   B. format()

   C. __str__()

   D. __format__()

6. Solution: The function __format__() is called when the format() function is used.

7. What will be the output of the following Python code?

   
   class tester:
       def __init__(self, id):
           self.id = str(id)
           id = "224"
    
   >>> temp = tester(12)
   >>> print(temp.id)
       

   A. 12 Answer: Option A

   B. 224

   C. None

   D. Error

8. Solution: Id in this case will be the attribute of the instance.

9. What will be the output of the following Python program?

   
   def foo(x):
       x[0] = ['def']
       x[1] = ['abc']
       return id(x)
   q = ['abc', 'def']
   print(id(q) == foo(q))
       

   A. Error

   B. None

   C. False

   D. True Answer: Option D

10. Solution: The same object is modified in the function.

11. Which module in the Python standard library parses options received from the command line?

    A. getarg

    B. getopt Answer: Option B

    C. main

    D. os

12. Solution: getopt parses options received from the command line.

13. What will be the output of the following Python program?

    
    z = set('abc')
    z.add('san')
    z.update(set(['p', 'q']))
    z
        

    A. {‘a’, ‘c’, ‘c’, ‘p’, ‘q’, ‘s’, ‘a’, ‘n’}

    B. {‘abc’, ‘p’, ‘q’, ‘san’}

    C. {‘a’, ‘b’, ‘c’, ‘p’, ‘q’, ‘san’} Answer: Option C

    D. {‘a’, ‘b’, ‘c’, [‘p’, ‘q’], ‘san’}

14. Solution: The code shown first adds the element ‘san’ to the set z. The set z is then updated and two more elements, namely, ‘p’ and ‘q’ are added to it. Hence the output is: {‘a’, ‘b’, ‘c’, ‘p’, ‘q’, ‘san’}.

15. What arithmetic operators cannot be used with strings in Python?

    A. *

    B. – Answer: Option B

    C. +

    D. All of the mentioned

16. Solution: + is used to concatenate and * is used to multiply strings.