import xlsxwriter

wb = xlsxwriter.Workbook('hello.xlsx')
ws = wb.add_worksheet()

data='XlsxWriter Library'

ws.set_column('C:C', 25)
ws.set_row(2, 50)
ws.write('C3', data)

text = 'Developed by John McNamara'
ws.write_comment('C3', text)

wb.close()

ws.write_comment('C3', text, {'visible': True})

import xlsxwriter

wb = xlsxwriter.Workbook('hello.xlsx')
ws = wb.add_worksheet()

ws.show_comments()

data='Python'
ws.set_column('C:C', 25)
ws.set_row(0, 50)
ws.write('C1', data)
text = 'Programming language developed by Guido Van Rossum'
ws.write_comment('C1', text)
data= 'XlsxWriter'
ws.set_row(2, 50)
ws.write('C3', data)
text = 'Developed by John McNamara'
ws.write_comment('C3', text, {'visible':False})
data= 'OpenPyXl'
ws.set_row(4, 50)
ws.write('C5', data)
text = 'Developed by Eric Gazoni and Charlie Clark'
ws.write_comment('C5', text, {'visible':True})

wb.close()

worksheet.write_comment('C3', 'Atonement', {'author': 'Tutorialspoint'})

worksheet.set_comments_author('Tutorialspoint')