Python输出PowerPoint（ppt）文件中全部文字信息的方法

import win32comfrom win32com.client import Dispatch, constantsppt = win32com.client.Dispatch('PowerPoint.Application')ppt.Visible = 1pptSel = ppt.Presentations.Open("c://1.ppt")win32com.client.gencache.EnsureDispatch('PowerPoint.Application')f = file("c://1.txt","w")slide_count = pptSel.Slides.Countfor i in range(1,slide_count + 1):  shape_count = pptSel.Slides(i).Shapes.Count  print shape_count  for j in range(1,shape_count + 1):    if pptSel.Slides(i).Shapes(j).HasTextFrame:      s = pptSel.Slides(i).Shapes(j).TextFrame.TextRange.Text      f.write(s.encode('utf-8') + "/n")    f.close()ppt.Quit()