pythonとexcel:配列をexcelに書き込む

import openpyxl
from openpyxl.workbook import Workbook
import datetime

outwb = Workbook()
wo = outwb.active

careerSheet = outwb.create_sheet('career',0)
# careerSheet['A1']= datetime.datetime.now()
careerSheet.cell(row=1,column=1).value = 'A'
careerSheet.cell(row=1,column=2).value = 'B'
careerSheet.cell(row=1,column=3).value = 'c'

careerSheet.cell(row=2,column=2).value = 20
careerSheet.cell(row=2,column=3).value= 30
careerSheet.append([1,2,3])
careerSheet.append(['This is A1', 'This is B1', 'This is C1'])
careerSheet.append({'A' : 'This is A1', 'C' : 'This is C1'})
careerSheet.append({1 : 'This is A1', 3 : 'This is C1'})

outwb.save("sample.xlsx")