IITM BS Week 10 Programming in Python Questions

01

What is the output? ``` def f(x): try: print("T") return 10 // x except ZeroDivisionError: print("H") return "Z" finally: print("Y") return "F" p = f(2) q = f(0) ``` Select all options that are correct:

Multiple correct

HARD

3 marks

10 May 2026

02

What is printed? ``` total = 1 err = 0 for x in [5, "2", 0, "x"]: try: total *= 10 // int(x) except ZeroDivisionError: err += 3 total += 2 except: err += 1 print(total + err) ``` Enter an integer as your answer.

Numerical

MEDIUM

3 marks

10 May 2026

03

What is the value of Counter.count?

Comprehension

EASY

2 marks

10 May 2026

04

What is the value of c + d?

Comprehension

MEDIUM

2 marks

10 May 2026

05

Given the following code snippet, what will be the output? ``` def get_square(items, i): return items[i]**2 def safe_get_square(items, j): try: return get_square(items, j) except IndexError: return 0 except: return -1 nums = [5, -2, 3] print(safe_get_square(nums, 1)) print(safe_get_square(nums, -1)) print(safe_get_square([], -1)) print(safe_get_square(None, 1)) ```

Single correct

MEDIUM

3 marks

31 August 2025

06

Consider the following snippet of code: What will be the output? ``` class Shape: def __init__(self): pass def area(self): return "Area not defined" def describe(self): return f"I am a shape, Area: {self.area()}" class Rectangle(Shape): def __init__(self, width, height): self.width = width self.height = height def area(self): return self.width * self.height class Circle(Shape): def __init__(self, radius): self.radius = radius r = Rectangle(4, 5) c = Circle(3) print(r.describe()) print(c.describe()) ```

Single correct

EASY

3 marks

31 August 2025

07

Consider the below python code. What will be the output of the given code? Enter an integer as your answer. ``` class A: def __init__(self): self.value = 5 def add(self, num): self.value += num return self.value class B(A): def __init__(self): super().__init__() self.value *= 2 def add(self, num): return super().add(num * 2) obj = B() result = obj.add(3) print(result) ```

Numerical

HARD

3 marks

31 August 2025

08

What will be the output of the given code? ``` mgr = Manager("Alice", 75000, "HR") mgr.update_salary(80000) mgr.print_details() ```

Comprehension

MEDIUM

1.5 marks

13 April 2025

09

If the below main code is executed after the class definition, what will be the output? ``` managers = [ Manager("Ramesh", 100000, "Marketing"), Manager("Rathika", 120000, "IT"), Manager("Anshu", 90000, "HR") ] print(managers[0].total_managers) ```

Comprehension

MEDIUM

1.5 marks

13 April 2025

10

The python code has a base class Character and a subclass Mage that extends it. Check the following code snippets below. ``` class Character: def __init__(self, name, role): self.name = name self.role = role def speak(self): return f"{self.name} is a brave {self.role}!" class Mage(Character): def __init__(self, name, spell): super().__init__(name, "Mage") self.spell = spell def speak(self): return f"{self.name} is a Mage who casts {self.spell}!" warrior = Character("Tigreal", "Warrior") mage = Mage("Valir", "Fireball") print(warrior.speak()) print(mage.speak()) ```

Single correct

EASY

3 marks

22 December 2024

11

Consider the following Python code snippet. What will be the numerical value of result after executing the code? Assume that there is no prefix or suffix with this code and this is the whole code. Hint about different errors classes: - ZeroDivisionError - Occurs when attempted to divide by zero. - NameError - Occurs when an undefined variable is accessed. - Exception - Base class of all errors. ``` try: print(value) result = 10 / 0 except ZeroDivisionError: result = -2 except NameError: result = -1 except Exception: result = -3 finally: result += 2 print(result) ```

Numerical

MEDIUM

3 marks

22 December 2024

12

employees.csv is a CSV file that has the following contents: EmpID,Name,Department,Salary,Years 1,John Doe,Engineering,75000,5 2,Jane Smith,Marketing,80000,3 3,Emily Johnson,Engineering,80000,7 4,Michael Brown,Sales,72000,4 5,Lisa Davis,Marketing,83000,2 6,James Wilson,Sales,74000,8 7,Alice Lee,Engineering,77000,4 8,Bob White,Sales,69000,5 9,Carol Black,Marketing,71000,6 10,David Green,Engineering,72000,3 What is the output of the following snippet of code? Enter an integer as your answer. ``` def do_something(filename, department): file = open(filename, 'r') file.readline() val, count = 0, 0 for line in file: empid, name, dept, salary, years = line.strip().split(',') salary = float(salary) if department == dept: val += salary count += 1 file.close() return int(val / count) print(int(do_something('employees.csv', 'Engineering'))) ```

Numerical

MEDIUM

3 marks

22 December 2024

13

check_cooling is a method of the class AirConditioner that updates the attribute cooling_required to the Boolean literal True if the attribute current_temperature is above 28 degrees Celsius, indicating that cooling is required, and False otherwise. Select the correct implementation of this method.

Single correct

EASY

3 marks

28 April 2024

14

strings.txt is a text file whose contents are given below: 1a 2b 3c 4d 5e 6f 7g What is the output of the following snippet of code? Enter an integer as your answer. f = open('strings.txt', 'r') count = 0 ``` f = open('strings.txt', 'r') count = 0 for line in f: line = line.strip() for char in line: try: x = int(char) except ValueError: count += 1 f.close() print(count) ```

Numerical

EASY

3 marks

28 April 2024

15

What is the output of the following snippet of code? surgeon = Surgeon('Kian', 1000, 'Yes') surgeon.change_fee(1200) surgeon.print_info()

Comprehension

EASY

1.5 marks

28 April 2024

16

hospital represents a list of objects of type Surgeon. What is the output of the following snippet of code? Enter an integer as your answer. Surgeon.count = 0 hospital = [ Surgeon('Hari', 800, 'No'), Surgeon('Pooja', 1200, 'Yes'), Surgeon('Ayan', 600, 'No'), Surgeon('Sindhu', 900, 'Yes'), Surgeon('Mary', 1300, 'Yes') ] count = 0 ``` Surgeon.count = 0 hospital = [ Surgeon('Hari', 800, 'No'), Surgeon('Pooja', 1200, 'Yes'), Surgeon('Ayan', 600, 'No'), Surgeon('Sindhu', 900, 'Yes'), Surgeon('Mary', 1300, 'Yes') ] count = 0 for surgeon in hospital: if surgeon.is_experienced(): count = count + 1 print(count) ```

Comprehension

EASY

1.5 marks

28 April 2024

17

What is the output of the following snippet of code? try: print(employees['Finance']) except FileNotFoundError: print('File Not Found Error') except KeyError: print('Key Error')

Comprehension

EASY

1.5 marks

28 April 2024

18

What is the output of the following snippet of code? Enter an integer as your answer. print(len(employees['HR'].keys()))

Comprehension

EASY

1.5 marks

28 April 2024

19

Each entry in `L` corresponds to a student and the marks he or she has scored in a Python exam. Write these details to a CSV file named `scores.csv`. The header should be `Name,Python`. The entries should be written to the file in the order in which they appear in the list `L`. Select the correct implementation of a function named `write_to_file` that accepts `L` as argument and writes to the file `scores.csv`. L = [('Arjun', 75), ('Anita', 85), ('Atul', 80), ('Anwer', 75), ('Andrew', 80)] Snippet-1 ``` def write_to_file(L): f = open('scores.csv', 'w') f.write('Name,Python\n') for i in range(len(L)): name, marks = L[i] line = name + ',' + marks if i != len(L) - 1: line = line + '\n' f.write(line) f.close() ``` Snippet-2 ``` def write_to_file(L): f = open('scores.csv', 'w') f.write('Name,Python\n') for i in range(len(L)): name, marks = L[i] line = name + ',' + str(marks) if i != len(L) - 1: line = line + '\n' f.write(line) f.close() ```

Single correct

MEDIUM

3 marks

24 December 2023

20

Consider the following snippet: This code produces the given output: {'Kubra': {'Math': 80, 'Chemistry': 90}, 'Livin': {'Physics': 85, 'Biology': 88}} Which of the following could be the contents of the file `marks.csv`? Select all possible answers. Note that dictionaries store keys from left to right in the order in which they are inserted. Once a key has been inserted into a dictionary, its order with respect to other keys doesn't change, unless it is deleted and reinserted. ``` f = open('marks.csv', 'r') D = dict() for line in f: name, subject, mark = line.strip().split(',') mark = int(mark) if name not in D: D[name] = dict() D[name][subject] = mark print(D) ```

Multiple correct

HARD

3 marks

24 December 2023

21

What is the output of the following snippet of code if it is given that the except block is executed at least once? ``` val = 0 count = 0 for string in ['1', '1.2', '3', '4']: try: x = int(string) val += x except: count += 1 val += 10 print(val + count) ```

Numerical

MEDIUM

3 marks

24 December 2023

22

scores.csv is a CSV file that has the following contents: ``` Seqno,Name,Gender,CT,Python,PDSA 0,Ram,M,80,90,100 1,Sahana,F,90,80,70 2,Ritvik,M,80,100,80 3,Suchitra,F,100,100,100 4,Praful,M,60,70,85 5,Aisha,F,85,95,90 6,Andrew,M,100,65,75 7,Soundarya,F,85,75,65 8,Krishnan,M,95,85,90 9,Brinda,F,65,95,85 ``` What is the output of the following snippet of code? ``` def do_something(filename, sub): f = open(filename, 'r') f.readline() val, count = 0, 0 for line in f: sno, name, gender, ct, python, pdsa = line.strip().split(',') sno, ct, python, pdsa = int(sno), int(ct), int(python), int(pdsa) if sub == 'CT': val = val + ct elif sub == 'Python': val = val + python elif sub == 'PDSA': val = val + pdsa count = count + 1 f.close() return val / count print(int(do_something('scores.csv', 'Python'))) ```

Numerical

HARD

4 marks

03 September 2023

23

What is the output of the following snippet of code? ``` book = Book('Wings of Fire', 250, 'Dr. Kalam', 'Non Fiction') book.change_price(300) book.print_info() ```

Comprehension

HARD

5 marks

03 September 2023

24

Assume that library represents a list of objects of type Book. What does the variable count represent at the end of execution of this code? ``` # assume that library has n elements, only three of which are shown below # Book.count = 0 library = [Book('A brief history of time', 250, 'Hawking', 'Non Fiction'), Book('Alice in wonderland', 100, 'Carroll', 'Fiction'), Book('Feynman lectures in Physics', 400, 'Feynman', 'Non Fiction')] count = 0 for book in library: if book.is_fiction(): count = count + 1 ```

Comprehension

MEDIUM

4 marks

03 September 2023

25

What is the output of the following snippet of code? ``` L = [1, 3, -1, 4, -2, 5, 3] try: n = 10 for i in range(n): if L[i] < 0: L[i] = 0 except IndexError: for i in range(n - len(L)): L.append(0) finally: print(L) ```

Single correct

HARD

4 marks

30 April 2023

26

We are not sure if the file file.txt exists in the current directory. Select all error-free implementations of a program that reads this file and prints one line of the file at a time. If the file doesn't exist, the code should terminate gracefully.

Multiple correct

MEDIUM

5 marks

30 April 2023

27

words.txt is a text file with the following contents: ``` def do_something(filename): f = open(filename, 'r') maxword = f.readline().strip() count = 1 for line in f: word = line.strip() if len(word) > len(maxword): maxword = word count = 1 elif len(word) == len(maxword): count += 1 f.close() return count print(do_something('words.txt')) ``` What is the output of the following snippet of code?

Numerical

MEDIUM

4 marks

30 April 2023

28

careers.csv is a file that has the details of the careers of some cricketers. The first column is the name of the player, the second column is the year in which the player made his first appearance in international cricket and the third column is the year in which the player retired. The entire file is given below for your reference. Player,Start,End Tendulkar,1989,2013 Ponting,1995,2012 Kallis,1995,2013 Dravid,1996,2012 Cook,2006,2018 Sangakkara,2000,2015 Lara,1990,2008 Chanderpaul,1994,2015 Jayawardene,1997,2014 Border,1978,1994 Waugh,1985,2004 Gavaskar,1971,1987 Khan,2000,2017 Amla,2004,2019 Root,2012,2021 A player is said to be active from his start year to end year, endpoints inclusive. For example, Tendulkar was active for 2013 - 1989 + 1 = 25 years. Create a list of tuples named careers that has the following form: [ ('Tendulkar', 1989, 2013), ('Ponting', 1995, 2012), ... # Fill the remaining entries ('Root', 2012, 2021) ] Each entry in the list is a tuple that corresponds to one line in the file. The header has to be ignored. The type of each element within a tuple should be (str, int, int). Which of the options corresponds to the correct implementation?

Single correct

MEDIUM

4 marks

11 December 2022

29

What will be the output of following snippet of code? ``` Audi = Car(10, 20, 2) Audi.setpos(0) Audi.setspeed(10) print(Audi.getpos(2)) ```

Comprehension

EASY

4 marks

11 December 2022

30

What will be the output of following snippet of code? ``` tata = Car(0, 0, 5) print(tata.seta(10)) print(tata.getspeed(6)) print(tata.getpos(6)) ```

Comprehension

MEDIUM

5 marks

11 December 2022

31

Given variables a and b are already defined. Select the correct statement(s).

Comprehension

MEDIUM

5 marks

11 December 2022

32

Given a = 20, b = 0 which exception will be triggered in the given code snippet?

Comprehension

EASY

4 marks

11 December 2022

33

What is the output of the following snippet of code? ``` try: print(d['north america']) except ValueError: print('Value Error') except KeyError: print('Key Error') ```

Comprehension

EASY

3 marks

07 August 2022

34

What is the output of the following snippet of code? ``` print(len(d['asia'].keys())) ```

Comprehension

EASY

2 marks

07 August 2022

All PYQs

All PYQs