Preparing for a Python interview can be daunting, especially when it comes to theoretical questions. Here are 20 multiple-choice questions that cover various aspects of Python. Test your knowledge and get ready to impress your interviewers!
1. What is the correct file extension for Python files?
- A) .pyth
- B) .python
- C) .py
- D) .p
Answer: C) .py
2. Which of the following is a mutable data type in Python?
- A) Tuple
- B) String
- C) List
- D) Set
Answer: C) List
3. What will be the output of the following code?
print(type([]) is list)
- A) True
- B) False
- C) None
- D) TypeError
Answer: A) True
4. Which built-in function can be used to read data from a file?
- A) read()
- B) open()
- C) fileread()
- D) file()
Answer: B) open()
5. What does the “len()” function do in Python?
- A) Checks if an object is empty
- B) Returns the number of items in an object
- C) Returns the length of a string only
- D) Counts characters in a sentence
Answer: B) Returns the number of items in an object
6. What is the output of the following code?
x = 'Python'
print(x[0:2])
- A) Py
- B) Python
- C) P
- D) yt
Answer: A) Py
7. Which of the following methods can be used to add an element to a list in Python?
- A) add()
- B) append()
- C) insert()
- D) Both B and C
Answer: D) Both B and C
8. What will be the result of the following code?
print(bool(""))
- A) True
- B) False
- C) None
- D) TypeError
Answer: B) False
9. How is a dictionary defined in Python?
- A) {key: value}
- B) [key, value]
- C) (key, value)
- D) <key, value>
Answer: A) {key: value}
10. What keyword is used to create a function in Python?
- A) function
- B) def
- C) func
- D) define
Answer: B) def
11. Which operator is used for integer division in Python?
- A) /
- B) //
- C) %
- D) **
Answer: B) //
12. What type of error will be raised if you try to access a non-existing key in a dictionary?
- A) KeyError
- B) ValueError
- C) TypeError
- D) AttributeError
Answer: A) KeyError
13. What is the purpose of the ‘self’ parameter in Python class methods?
- A) To refer to the current instance of the class
- B) To refer to the class itself
- C) To create a new class
- D) To return a value from the method
Answer: A) To refer to the current instance of the class
14. What will be the output of the following code?
x = [1, 2, 3]
x.append([4, 5])
print(x)
- A) [1, 2, 3, 4, 5]
- B) [1, 2, 3, [4, 5]]
- C) [1, 2, 3, 4, 5, None]
- D) [4, 5]
Answer: B) [1, 2, 3, [4, 5]]
15. What will the following code print?
for i in range(5):
print(i, end=' ')
- A) 0 1 2 3 4
- B) 1 2 3 4 5
- C) 0 1 2 3 4 5
- D) 1 2 3 4
Answer: A) 0 1 2 3 4
16. Which of the following statements is used to catch exceptions in Python?
- A) try
- B) except
- C) finally
- D) All of the above
Answer: D) All of the above
17. What does the ‘pass’ statement do in Python?
- A) Stops the execution
- B) Skips the remaining code
- C) Does nothing and acts as a placeholder
- D) Exits the loop
Answer: C) Does nothing and acts as a placeholder
18. Which function is used to convert a string to an integer in Python?
- A) intval()
- B) str_to_int()
- C) int()
- D) convert()
Answer: C) int()
19. In Python, which of the following is an iterable?
- A) List
- B) Dictionary
- C) String
- D) All of the above
Answer: D) All of the above
20. What does the ‘continue’ statement do in a loop?
- A) Exits the loop
- B) Skips the current iteration and continues to the next
- C) Stops the program
- D) None of the above
Answer: B) Skips the current iteration and continues to the next
These questions should provide a solid foundation for anyone preparing for a Python interview. Good luck!
Srinimf 