Python - TypeError: "int" object is not iterable

import xlsxwriter

Workbook = xlsxwriter.Workbook('libro.xlsx')

Worksheet = Workbook.add_worksheet('datos')

datos = ( 1,2,3,4,5,6,7,8,9)

row = 0

col = 0

for item,item,item,item,item,item,item,item,item in (datos):

        Worksheet.write(row, col, item)

        Worksheet.write(row, col+1, item)

        Worksheet.write(row, col+2, item)

        Worksheet.write(row, col+3, item)

        Worksheet.write(row, col+4, item)

        Worksheet.write(row, col+5, item)

        Worksheet.write(row, col+6, item)

        Worksheet.write(row, col+7, item)

        Worksheet.write(row, col+8, item)

row += 1

Workbook.close()

import xlsxwriter

Workbook = xlsxwriter.Workbook('libro.xlsx')

Worksheet = Workbook.add_worksheet('datos')

datos = ( 1,2,3,4,5,6,7,8,9)

row = 0

for item in (datos):

   for col in range(10):

      Worksheet.write(row, col, item)

   row += 1

Workbook.close()