Export data as xlsx or xls file in python

Question

I am trying to achieve to export data as xlsx or xls format in python. This has to be achieved without any library such as pandas openpyxl etc. Most of the articles or google searches tell me to convert it with the help of a library.

Using below code snipped, I have one csv file which is called example1.csv. In the example1.csv file, the data are structured as below:

Address     Phone   Status
Singapore   123     Single
China       222     Single
India       333     Single
Malaysia    444     Divorce

The end end goal is to convert the csv file to xls or xls format.

e.g : The code below is used to only read the csv file

import csv
file = open("part1.csv")
csvreader = csv.reader(file)
header = next(csvreader)
print(header)
rows = []
for row in csvreader:
    rows.append(row)
print(rows)
file.close()

I do know in my previous project, I did with 'data:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;base64,' in javascript to create the xls or xlsx format. Will it possible to use the same approach in python?