Python for Data Science Week 2 NPTEL Assignment Answers 2025

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✅ Subject: Python for Data Science
📅 Week: 2
🎯 Session: NPTEL 2025 July-October
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NPTEL Python for Data Science Week 2 Assignment Answers 2025

1. Which of the following object does not support indexing?

• tuple
• list
• dictionary
• set

Answer : See Answers 

2. How can you concatenate the strings “data” and “science” with a hyphen(-) between them?

• “data”.join(“science”)
• “-”.join([“data”, “science”])
• “data” + “-” + “science”
• None of the above.

Answer :

3. What will be the output of the following code snippet?

• [[ 5 12]
  [21 32]]
• [[19 22]
  [43 50]]
• [[3 8]
  [35 56]]
• [[ 5 21]
  [12 32]]

Answer :

4. What will be the output of the following code snippet?

• [ 1 10 3 4 5 6 7 8 9 10]
• [ 10 1 2 3 4 5 6 7 8 9]
• [ 0 10 2 3 4 5 6 7 8 9]
• [ 10 2 3 4 5 6 7 8 9 ]

Answer :

5. What is the output of the following code?

• [2, 3, 4, 5]
• [0, 1, 2, 3]
• [1, 2, 3, 4]
• Will throw an error: Set objects are not iterable.

Answer :

6. What will be the output of the following code snippet?

• {27.5}
• {1, ‘four ‘, 3.0, 3, 5, ‘two ‘, 10, 27.5}
• {1, ‘four ‘, 3.0, 5, ‘two ‘, 10, 27.5}
• {1, ‘four ‘, 3.0, 5, ‘two ‘, 3}

Answer : See Answers

7. Let t1 = (1, 2, “tuple”, 4) and t2 = (5, 6, 7). Which of the following will not give any error after the execution?

• t1.append(5)
• x = t2[t1[1]]
• t3 = t1 + t2
• t3 = (t1, t2)
• t3 = (list(t1), list(t2))

Answer :

8. Let d = {1 : “Pyhton”, 2 : [1, 2, 3]}. Which among the following will not give the error after the execution?

• d[2].append(4)
• x = d[0]
• d[“one”] = 1
• d.update({‘one’ : 2})

Answer :

9. Which of the following data type is immutable?

• list
• set
• tuple
• dictionary

Answer :

10. student = {‘name’: ‘Jane’, ‘age’: 25, ‘courses’: [‘Math’, ‘Statistics’]}
Which among the following will return
{‘name’: ‘Jane’, ‘age’: 26, ‘courses’: [‘Math’, ‘Statistics’], ‘phone’: ‘123-456’}

• student.update({‘age’ : 26})
• student.update({‘age’ : 26, ‘phone’: ‘123-456’})
• student[‘phone’] = ‘123-456’
  student.update({‘age’ : 26})
• None of the above

Answer :

11. What is the output of the following code?

• [‘M’, ‘A’, ‘H’, ‘E’, ‘S’, ‘H’]
• [‘m’, ‘a’, ‘h’, ‘e’, ‘s’, ‘h’]
• [‘M’, ‘a’, ‘h’, ‘e’, ‘s’, ‘h’]
• [‘m’, ‘A’, ‘H’, ‘E’, ‘S’, ‘H’]

Answer :

12. What will be the output of the following code snippet?

• [[1 2 3 4 5]
  [3 4 5 6 7]
  [5 6 7 8 9]]
• [[1 2 3 4]
  [3 4 5 6]
  [5 6 7 8]]
• [[2 3 4]
  [4 5 6]
  [6 7 8]]
• None of the above

Answer : See Answers

NPTEL Python for Data Science Week 2 Assignment Answers 2024

1. Which of the following object does not support indexing?

• tuple
• list
• dictionary
• set

Answer :- d

2. Given a NumPy array, arr = np.array([[[1, 2, 3], [4, 5, 6], [7, 8, 9]]]), what is the output of the command, print(arr[0][1])?

Answer :- c

3. What is the output of the following code?

• [2, 3, 4, 5]
• [0 1 2 3]
• [1, 2, 3, 4]
• Will throw an error: Set objects are not iterable.

Answer :- c

4. What is the output of the following code?

Answer :- c

5. Which of the following code gives output My friend’s house is in Chennai?

Answer :- a, d

6. Let t1 = (1, 2, “tuple”, 4) and t2 = (5, 6, 7). Which of the following will not give any error after the execution?

• t.append(5)
• x=t2[t1[1]]
• t3=t1+t2
• t3=(t1,t2)
• t3=(list(t1),list(t2))

Answer :- b, c, d, e

7. Let d = {1 : “Pyhton”, 2 : [1, 2, 3]}. Which among the following will not give the error after the execution?

• d[2].append(4)
• x=d[0]
• d[“one”]=1
• d.update(‘one′:2)

Answer :- a, c, d

8. Which of the following data type is immutable?

• list
• set
• tuple
• dictionary

Answer :- c

9. student = {‘name’: ‘Jane’, ‘age’: 25, ‘courses’: [‘Math’, ‘Statistics’]}
Which among the following will return
{‘name’: ‘Jane’, ‘age’: 26, ‘courses’: [‘Math’, ‘Statistics’], ‘phone’: ‘123-456’}

• student.update({‘age’ : 26})
• student.update({‘age’ : 26, ‘phone’: ‘123-456’})
• student[‘phone’] = ‘123-456’student.update({‘age’ : 26})
• None of the above

Answer :- b, c

10. What is the output of the following code?

• [‘M’, ‘A’, ‘H’, ‘E’, ‘S’, ‘H’]
• [‘m’, ‘a’, ‘h’, ‘e’, ‘s’, ‘h’]
• [‘M’, ‘a’, ‘h’, ‘e’, ‘s’, ‘h’]
• [‘m’, ‘A’, ‘H’, ‘E’, ‘S’, ‘H’]

Answer :- a