Interview question based on skill :
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Total Questions: 20
1. Which of the following returns a string that represents the present working directory?
Correct Answer is : os.getcwd()
2. What does os.link() do?
Correct Answer is : create a hard link
3. Which of the following can be used to create a directory?
Correct Answer is : os.mkdir()
4. Which of the following can be used to create a symbolic link?
Correct Answer is : os.symlink()
5. Which function is called when the following code is executed? f = foo() format(f)
Correct Answer is : __str__()
6. Which of the following will print True? a = foo(2) b = foo(3) print(a < b)
Correct Answer is : class foo:
def __init__(self, x):
self.x = x
def __lt__(self, other):
if self.x < other.x:
return True
else:
return False
7. Which function overloads the + operator?
Correct Answer is : __add__()
8. Which operator is overloaded by __invert__()?
Correct Answer is : ~
9. Which function overloads the == operator?
Correct Answer is : __eq__()
10. Which operator is overloaded by __lg__()?
Correct Answer is : none of the mentioned
11. Which function overloads the >> operator?
Correct Answer is : none of the mentioned
12. Let A and B be objects of class Foo. Which functions are called when print(A + B) is executed?
Correct Answer is : __add__(), __str__()
13. Which operator is overloaded by the __or__() function?
Correct Answer is : |
14. Which function overloads the // operator?
Correct Answer is : __floordiv__()
15. The process of pickling in Python includes:
Correct Answer is : conversion of a Python object hierarchy into byte stream
16. To sterilize an object hierarchy, the _____________ function must be called. To desterilize a data stream, the ______________ function must be called.
Correct Answer is : dumps(), loads()
17. Pick the correct statement regarding pickle and marshal modules.
Correct Answer is : The pickle module keeps track of the objects that have already been sterilized whereas the marshal module does not do this
18. What is the output of the line of code shown below? pickle.HIGHEST_PROTOCOL
Correct Answer is : 4
19. Which of the codes shown below will result in an error? Given that: object = ‘a’
Correct Answer is : >>> pickle.dumps(object, 3, True)
20. Which of the following functions can be used to find the protocol version of the pickle module currently being used?
Correct Answer is : pickle.DEFAULT_PROTOCOL
