变量和字符串的Python连接

Question

for i in range (0,len(list4)):
  ws.write(1, 0, datetime.now(), style1)
  ws.write(2, 1, 1)
  ws.write(2, 2, xlwt.Formula("A3+B3"))
  wb.save('example.xls')

我如何概括(A3 + B3)？

'"A" + i' + '"B" + i'  

它是否正确？？？

Answer 1

'A%(row)d+B%(row)d' % {'row': 3}

要么

'A{0}+B{0}'.format(3)