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jan-2026-python-week-8-grpa-4

384 words

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GrPA 4

Course: Jan 2026 - Python

GrPA 4

Due Apr 08, 2026 at 11:59 PM IST

Instructions

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Summary

- out of100

Score

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Private Tests

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**Change in eligibility criteria to write oppe2 exam: A5>=40/100 AND A6>=40/100 AND A7>=40/100 AND A8>=40/100. and becoming eligible to give the end term exam. ** Write a function named num_to_words that accepts a square matrix of single digit numbers as argument. Within the function, create a file named words.csv. Write the matrix to the file by replacing the digits with their corresponding words. For example, num_to_words([[1, 2], [3, 4]]) should create the file words.csv with the following contents:


one,two
three,four

Note that the matrix will only have integers from

0

9

, endpoints inclusive.

(1) You do not have to accept input from the user or print the output to the console. You just have to write the function definition. However, within the function, you have to create a file named words.csv and write to it.

(2) The last line of the file should not end with a '\n'. The last character of every other line in the file should end with a '\n'. This is a convention that we will be following in all questions that ask you to write to a file.

Public Tests ( 0/0 )

Case 1

Input:


text
public
[1, 2], [3, 4](/viewer?path=1, 2], [3, 4)

Case 1

Expected Output:


text
one,two
three,four

Case 2

Input:


text
public
[9, 7, 2], [1, 0, 5], [5, 2, 6](/viewer?path=9, 7, 2], [1, 0, 5], [5, 2, 6)

Case 2

Expected Output:


text
nine,seven,two
one,zero,five
five,two,six

🔒 Private Tests ( 0/0 )

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💻 IITM Official Solution

Solution code is currently locked and will be available after the deadline.

💻 My Submitted Code


python
def num_to_words(mat):
    """
    Convert matrix to file

    Argument:
        mat: list of lists
    Return:
        None
    """