python读取ppt文本内容

import win32com
from win32com.client import Dispatch, constants
ppt = win32com.client.Dispatch('PowerPoint.Application')
ppt.Visible = 1
pptSel = ppt.Presentations.Open("C:\\web\\phpStudy\\WWW\\ppt\\Russia\\1.pptx")
# win32com.client.gencache.EnsureDispatch('PowerPoint.Application')

#get the ppt's pages
slide_count = pptSel.Slides.Count
for 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
      print (s.encode('utf-8')+ "\n")

ppt.Quit()