Writing a matrix function, but not sure how to number it – Python

Write a function to do the following

 the function is called data_array_dump.py

 the inputs for this function are matrixText, rows, columns

 the output of the function is the matrixText repeated over the rows and columns but number columns and rows

 for example for the inputs matrixText="2ac4", rows=4, columns=6 the output should look like 

         1        2       3       4       5        6

  1  2ac4 2ac4 2ac4 2ac4 2ac4 2ac4

  2  2ac4 2ac4 2ac4 2ac4 2ac4 2ac4

  3  2ac4 2ac4 2ac4 2ac4 2ac4 2ac4

  4  2ac4 2ac4 2ac4 2ac4 2ac4 2ac4

So far, I can get the grid without the numbering with:

def data_array_dump(matrixText, rows, columns):
    matrix = ''
    for i in range(rows):
        for j in range(columns):
            matrix += matrixText + " "
        matrix += '\n'
    return matrix

I keep trying to put in another string or I’ve even tried lists but I’m totally stuck. Suggestions?

Rules for this task

1\. All inputs from user are pulled into script outside of function

2\. No prints inside function except while troubleshooting function

3\. A single print should used to output the result of your function to the user from outside the function

4\. No add-in libraries

>Solution :

Try:

def data_array_dump(matrixText, rows, columns):
    l_c = max(len(matrixText), len(str(columns)))
    l_r = len(str(rows))

    s = [[" " * l_r] + [f"{c:>{l_c}}" for c in range(1, columns + 1)]]
    for r in range(1, rows + 1):
        s.append([f"{r:>{l_r}}"] + [f"{matrixText:>{l_c}}"] * columns)
    return "\n".join(" ".join(row) for row in s)


print(data_array_dump(matrixText="2ac4", rows=10, columns=10))

Prints:

      1    2    3    4    5    6    7    8    9   10
 1 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
 2 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
 3 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
 4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
 5 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
 6 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
 7 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
 8 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
 9 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4
10 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4 2ac4