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Week 2 - Graded Assignment 2

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Course: Jan 2026 - Python
Topic: Python Object Aliasing and Referencing | Marks: 4

Question 1

Common data for the next 4 questions
Consider the below code.
a = 5
b = a
c = "hello"
d = c[:3]
b,d = c,b
b,e = d,b
d,b = e,c
f,d = d,e
del e
Try playing around in this python tutor link for answering the questions.
What is the total number of objects that were referenced by the variables in the given code during the execution?
Your Answer: 3
Status: Yes, the answer is correct.
Accepted Answers: (Type: String) 3
Topic: Object Lifetimes after Deletion | Marks: 2

Question 2

What is the total number of objects that were referenced by the variables in the given code at the end of the execution?
Your Answer: 2
Status: Yes, the answer is correct.
Accepted Answers:
(Type: String) 2
Topic: Reference Counting and Shared Objects | Marks: 2

Question 3

What is the total number of variables refering to the same object as variable b (including b) at the end of the execution of the given code?
Your Answer: 4
Status: Yes, the answer is correct.
Accepted Answers:
(Type: String) 4
Topic: Tracking Identical References | Marks: 4

Question 4

Select the variable(s) that are refering to the same object as a at some point of time during the execution of the above code.
  • b
  • c
  • d
  • e
  • f
Status: Yes, the answer is correct.
Accepted Answers:
b
d
Topic: String Escape Sequences (Backslashes) | Marks: 3

Question 5

Assume s is a str, if the output of print(s) is Single backslash \\ and double backslash \\\\, then select the possible the value(s) of s.
  • 'Single backslash \\\\ and double backslash \\\\\\\\'
  • 'Single backslash \\ and double backslash \\\\'
  • 'Single backslash /\/\ and double backslash /\/\/\/\'
  • '''Single backslash \\ and double backslash \\\\'''
  • """Single backslash \\ and double backslash \\\\"""
Accepted Answers:
'Single backslash \\\\ and double backslash \\\\\\\\'
Topic: Multiline Strings and Newlines | Marks: 4

Question 6

Assume s is a str, if the output of print(s) is given below.
apple
banana
cherry
Note: There is a newline at the end.
Select the possible the value(s) of s.
  • ```
    s = "apple\nbanana\ncheryy\n"
  • ```
    s = """apple
    banana
    cherry
    """
  • ```
    s = """
    apple
    banana
    cherry"""
  • ```
    s = (
    'apple\n',
    'banana\n',
    'cherry\n',
    )
  • ```
    s = (
    'apple\n'
    'banana\n'
    'cherry\n'
    )
  • ```
    s = 'apple\n'"banana\n"'cherry\n'
  • ```
    s = 'apple\n'+"banana\n"+'cherry\n'
  • ```
    apple = 'apple\n'
    cherry = 'cherry\n'
    s = apple+"banana\n"+cherry
  • ```
    apple = 'apple\n'
    cherry = 'cherry\n'
    s = apple"banana\n"cherry
Accepted Answers:
s = "apple\nbanana\ncheryy\n"

s = """apple
banana
cherry
"""

s = (
  'apple\n'
  'banana\n'
  'cherry\n'
)

s = 'apple\n'"banana\n"'cherry\n'

s = 'apple\n'+"banana\n"+'cherry\n'

apple  = 'apple\n'
cherry  = 'cherry\n'
s = apple+"banana\n"+cherry
Topic: f-strings and Padding | Marks: 2

Question 7

Select the string(s) that are equal to "000500".
  • f"{500:06}"
  • f"{500:03}"
  • "0"*3+500
  • 0*3+"500"
  • "0"*3+"500"
Status: Yes, the answer is correct.
Accepted Answers:
f"{500:06}"
"0"*3+"500"
Topic: String Formatting and raw-strings | Marks: 2

Question 8

Consider the below code block.
n_apples = 5
n_bananas = 7
s = ...
print(s)
If the output of the code is 5 apples and 7 bananas., select the possible expression(s) that can be used for `s``.
  • s = r"{n_apples} apples and {n_bananas} bananas."
  • s = f'{n_apples} apples and {n_bananas} bananas.'
  • s = f"{n_apples} apples and {n_bananas} bananas."
  • s = n_apples+" apples and "+n_bananas+" bananas."
  • s = str(n_apples)+" apples and "+str(n_bananas)+" bananas."
  • s = str(n_apples)+"apples and"+str(n_bananas)+"bananas."
Accepted Answers:
s = f'{n_apples} apples and {n_bananas} bananas.'
s = f"{n_apples} apples and {n_bananas} bananas."
s = str(n_apples)+" apples and "+str(n_bananas)+" bananas."
Topic: Precision Formatting in f-strings | Marks: 2

Question 9

Consider the below code block.
n_apples = 5
apple_price = 5.7
s = ...
print(s)
If the output of the code is 5 kgs of apple cost ₹ 28.50, select the possible expression(s) that can be used for `s``.
  • s = f"{n_apples} kgs of apple cost ₹ {n_apples*apple_price}"
  • s = f"{n_apples} kgs of apple cost ₹ {n_apples*apple_price:0.2f}"
  • s = f"{n_apples} kgs of apple cost ₹ {n_apples*apple_price:.2f}"
  • s = n_apples+" kgs of apple cost ₹ "+n_apples*apple_price
  • s = str(n_apples)+" kgs of apple cost ₹ "+str(n_apples*apple_price)
  • s = str(n_apples)+" kgs of apple cost ₹ "+str(n_apples*apple_price)+"0"
Status: Yes, the answer is correct.
Accepted Answers:
s = f"{n_apples} kgs of apple cost ₹ {n_apples*apple_price:0.2f}"
s = f"{n_apples} kgs of apple cost ₹ {n_apples*apple_price:.2f}"
s = str(n_apples)+" kgs of apple cost ₹ "+str(n_apples*apple_price)+"0"
Topic: String Alignment in f-strings | Marks: 4

Question 10

Consider the below code block.
a,b = "56"
s = f'{a*2:5}|{b:^5}|{a*3:>7}'
What is the value of the variable s? Enter the answer as a single quoted string.
Your Answer: 55
Accepted Answers:
(Type: String) '55 | 6 | 555'
Topic: Chained String methods return types | Marks: 2

Question 11

Assume s is a str variable. What is the type of the expression s.lower().isalpha()?
  • int
  • str
  • float
  • list
  • bool
  • NoneType
Status: Yes, the answer is correct.
Accepted Answers:
bool
Topic: Missing Arguments (Method Signature) | Marks: 2

Question 12

Assume s is a str variable. What is the type of the expression s.startswith()?
  • int
  • str
  • float
  • list
  • bool
  • NoneType
  • Raises Error
Status: Yes, the answer is correct.
Accepted Answers:
Raises Error

Question 13

Assume s is a str variable. What is the type of the expression s.lower().isalpha()?
  • int
  • str
  • float
  • list
  • bool
  • Raises error
Status: Yes, the answer is correct.
Accepted Answers:
bool
Topic: Non-existent Methods (AttributeError) | Marks: 2

Question 14

Assume s is a str variable. What is the type of the expression s.lowercase().isalpha()?
  • int
  • str
  • float
  • list
  • bool
  • Raises error
Status: Yes, the answer is correct.
Accepted Answers:
Raises error
Topic: Argument Type Validation | Marks: 2

Question 15

Assume s is a str variable. What is the type of the expression s.index(3)?
  • int
  • str
  • float
  • list
  • bool
  • Raises error
Status: Yes, the answer is correct.
Accepted Answers:
Raises error
Topic: Chained Attribute Access (Properties vs Methods) | Marks: 2

Question 16

Assume s is a str variable. What is the type of the expression s.title.strip()?
  • int
  • str
  • float
  • list
  • bool
  • Raises error
Status: Yes, the answer is correct.
Accepted Answers:
Raises error
Topic: String Sanitization Chain | Marks: 2

Question 17

Assume s is a str variable. What is the type of the expression s.title().strip("-")?
  • int
  • str
  • float
  • list
  • bool
  • Raises Error
Status: Yes, the answer is correct.
Accepted Answers:
str
Topic: Join Method Return Type | Marks: 2

Question 18

Assume s is a str variable. What is the type of the expression s.join([s[0],s[1],s[3]])?
  • int
  • str
  • float
  • list
  • bool
  • Raises Error
Status: Yes, the answer is correct.
Accepted Answers:
str
Topic: Boolean Truthiness of Inputs | Marks: 3

Question 19

What is the value stored in the variable x?
x = bool(input())
Input
False
  • False
  • True
  • Value Error
  • 'False'
Status: Yes, the answer is correct.
Accepted Answers:
True
Topic: Non-Empty String Truthiness | Marks: 2

Question 20

What is the value of the expression bool('True')?
  • True
  • False
  • Raises Error
Status: Yes, the answer is correct.
Accepted Answers:
True
Topic: Literal Boolean Truthiness | Marks: 2

Question 21

What is the value of the expression bool(False)?
  • True
  • False
  • Raises Error
Status: Yes, the answer is correct.
Accepted Answers:
False
Topic: Non-zero Integer Truthiness | Marks: 2

Question 22

What is the value of the expression bool(-1)?
  • True
  • False
  • Raises Error
Status: Yes, the answer is correct.
Accepted Answers:
True
Topic: Boolean OR Short-circuiting | Marks: 3

Question 23

What is the value of the expression 0.0 or "2" or 4?
  • True
  • False
  • "2"
  • 0.0
  • 4
  • Raises Error
Status: Yes, the answer is correct.
Accepted Answers:
"2"
Topic: Nested If Structure | Marks: 4

Question 24

Consider the below code
if a:
  if b:
    if c:
      print('c')
    print('b')
  print('a')
Select the possible output(s) of the given code, assuming any possible values for a, b and c.
  • ```
    a
  • ```
    b
  • ```
    a
    b
  • ```
    b
    a
  • ```
    c
    b
  • ```
    c
    b
    a
Accepted Answers:
a

b
a

c
b
a
Topic: If-Else Nesting Logic | Marks: 4

Question 25

Consider the below code
if a:
  if b:
    if c:
      print('c')
    else:
      print('b')
  else:
    print('a')
Select the possible output(s) of the given code, assuming any possible values for a, b and c.
  • ```
    a
  • ```
    b
  • ```
    b
    a
  • ```
    c
    b
  • ```
    c
    b
    a
Accepted Answers:
a

b

Question 26

Consider the below code
if a:
    if b:
        print('b')
    if c:
        print('c')
    print('a')
Select the possible output(s) of the given code, assuming any possible values for a, b and c.
  • ```
    a
  • ```
    b
  • ```
    c
  • ```
    b
    a
  • ```
    b
    c
  • ```
    b
    c
    a
Status: Yes, the answer is correct.
Accepted Answers:
a

b
a

b
c
a
Topic: Boolean Logic Equivalence | Marks: 4

Question 27

Consider the given code.
if a:
  if b:
    if c:
      print('abc')
Select the code block(s) that is/are equivalent to the above code.
  • ```
    if a or b or c:
    print('abc')
  • ```
    if a and b and c:
    print('abc')
  • ```
    if a:
    if b and c:
    print('abc')
  • ```
    if c:
    if b and a:
    print('abc')
  • ```
    if not c:
    pass
    else:
    if b and a:
    print('abc')
  • ```
    if not c:
    pass
    else:
    if not b or not a:
    print('abc')
Status: Yes, the answer is correct.
Accepted Answers:
if a and b and c:
    print('abc')

if a:
    if b and c:
        print('abc')

if c:
    if b and a:
        print('abc')

if not c:
    pass
else:
    if b and a:
        print('abc')

Question 28

Select all the code snippet(s) that execute without any error.
  • ```
    from math import *
  • ```
    import math as m
    m.sin, m.cos
  • ```
    import pi from math
  • ```
    import math
    math.sin, math.cos
Status: Yes, the answer is correct.
Accepted Answers:
from math import *

import math as m
m.sin, m.cos

import math
math.sin, math.cos

Question 29

Consider the following snippet of code:
word = input()
match = False
if word.count('(') == word.count(')'):
    if word.count('[') == word.count(']'):
        if word.count('{') == word.count('}'):
            match = True
if match:
    print('PERFECT!')
else:
    print('IMPERFECT!')
Select all possible inputs for which this code prints PERFECT! as output. (MSQ)
  • ```
    (a{b[c]})
  • ```
    abcd
  • ```
    )(][}{
  • ```
    a(db]
Status: Yes, the answer is correct.
Accepted Answers:
(a{b[c]})

abcd

)(][}{

Question 30

Consider the below code snippet.
s = "abcdefghijklmnopqrstuvwxyz"
a = int(input())
b = int(input())
c = int(input())
d = int(input())
e = int(input())
print(s[-a:-len(s):-3])
print(s[::-b])
print(s[c:0:-3])
print(s[len(s):-d:-3])
print(s[:e:-3])
Select the user input combination(s) of a, b, c , d and e (where 0 <= a,b,c,d,e <= len(s) ) does the above code-snippet print following output ?
zwtqnkheb
zwtqnkheb
zwtqnkheb
zwtqnkheb
zwtqnkheb
  • 1,3,26,26,0
  • 1,3,25,26,0
  • 1,3,25,25,0
  • 1,3,26,0,0
  • 1,3,25,0,0
Accepted Answers:
1,3,26,26,0
1,3,25,26,0
1,3,26,0,0
1,3,25,0,0

Question 31

Consider the below code block and input.
a, b, c, d = input()
Input
1234
What will be the value stored in the variables a, b, c and d? Give your answer separated by commas without any spaces in between the values. For example 9,7,1,0
Your Answer: 1,2,3,4
Status: Yes, the answer is correct.
Accepted Answers:
(Type: String) 1,2,3,4

Question 32

Exploratory Problem: This problem is meant to encourage you to try certain things outside the lectures.
Consider the following snippet of code.
a, b, c, d = input()
print(a)
print(b)
print(c)
print(d)
What is the output of this code for the following input? Feel free to use the Python interpreter for exploratory questions.
1234
  • ```
    1234
    1234
    1234
    1234
  • ```
    1
    2
    3
    4
  • ```
    1
    1
    1
    1
  • ```
    4
    4
    4
    4
Status: Yes, the answer is correct.
Accepted Answers:
1
2
3
4

Question 33

Common data for the next 3 questions
Consider the below code blocks.

Code-1

a = int(input())
b = int(input())
if a > 0:
    if b < 0:
        print('OK')

Code-2

if int(input()) > 0 and int(input()) < 0:
    print('OK')
Choose the correct statement(s) from below regarding the code blocks.
  • (a) Code-1: Always accepts two inputs
  • (b) Code-2: Always accepts two inputs
  • (c) Code-1: If the first input is negative then program completes without printing anything
  • (d) Code-2: If the first input is negative then program completes without printing anything
  • (e) Code-1: It is possible to change the value of a by introducing a new line of code before accepting the value of b
Accepted Answers:
(a) Code-1: Always accepts two inputs
(c) Code-1: If the first input is negative then program completes without printing anything
(d) Code-2: If the first input is negative then program completes without printing anything
(e) Code-1: It is possible to change the value of a by introducing a new line of code before accepting the value of b

Question 34

How many comparisons are done for the following input in Code-1?
-1
1
Your Answer: 1
Status: Yes, the answer is correct.
Accepted Answers:
(Type: String) 1

Question 35

How many comparisons are done for the following input in Code-2?
1
1
Your Answer: 2
Status: Yes, the answer is correct.
Accepted Answers:
(Type: String) 2

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