python如何将office文件转换为PDF

pip install pywin32

python -m pip install --upgrade pip	

class PDFConverter:
 def __init__(self, pathname, export='.'):
  self._handle_postfix = ['doc', 'docx', 'ppt', 'pptx', 'xls', 'xlsx'] # 支持转换的文件类型
  self._filename_list = list() #列出文件
  self._export_folder = os.path.join(os.path.abspath('.'), 'file_server/pdfconver')
  if not os.path.exists(self._export_folder):
   os.mkdir(self._export_folder)
  self._enumerate_filename(pathname)

 def _enumerate_filename(self, pathname):
  '''
  读取所有文件名
  '''
  full_pathname = os.path.abspath(pathname)
  if os.path.isfile(full_pathname):
   if self._is_legal_postfix(full_pathname):
    self._filename_list.append(full_pathname)
   else:
    raise TypeError('文件 {} 后缀名不合法！仅支持如下文件类型：{}。'.format(pathname, '、'.join(self._handle_postfix)))
  elif os.path.isdir(full_pathname):
   for relpath, _, files in os.walk(full_pathname):
    for name in files:
     filename = os.path.join(full_pathname, relpath, name)
     if self._is_legal_postfix(filename):
      self._filename_list.append(os.path.join(filename))
  else:
   raise TypeError('文件/文件夹 {} 不存在或不合法！'.format(pathname))

 def _is_legal_postfix(self, filename):
  return filename.split('.')[-1].lower() in self._handle_postfix and not os.path.basename(filename).startswith(
   '~')

 def run_conver(self):
  print('需要转换的文件数是：', len(self._filename_list))
  for filename in self._filename_list:
   postfix = filename.split('.')[-1].lower()
   funcCall = getattr(self, postfix)
   print('原文件：', filename)
   funcCall(filename)
  print('转换完成！')

 def doc(self, filename):
  name = os.path.basename(filename).split('.')[0] + '.pdf'
  exportfile = os.path.join(self._export_folder, name)
  print('保存 PDF 文件：', exportfile)
  gencache.EnsureModule('{00020905-0000-0000-C000-000000000046}', 0, 8, 4)
  pythoncom.CoInitialize()
  w = Dispatch("Word.Application")
  pythoncom.CoInitialize() # 加上防止 CoInitialize 未加载
  doc = w.Documents.Open(filename)
  doc.ExportAsFixedFormat(exportfile, constants.wdExportFormatPDF,
        Item=constants.wdExportDocumentWithMarkup,
        CreateBookmarks=constants.wdExportCreateHeadingBookmarks)
  w.Quit(constants.wdDoNotSaveChanges)
	def docx(self, filename):
  self.doc(filename)

	def ppt(self, filename):
  name = os.path.basename(filename).split('.')[0] + '.pdf'
  exportfile = os.path.join(self._export_folder, name)
  gencache.EnsureModule('{00020905-0000-0000-C000-000000000046}', 0, 8, 4)
  pythoncom.CoInitialize()
  p = Dispatch("PowerPoint.Application")
  pythoncom.CoInitialize()
  ppt = p.Presentations.Open(filename, False, False, False)
  ppt.ExportAsFixedFormat(exportfile, 2, PrintRange=None)
  print('保存 PDF 文件：', exportfile)
  p.Quit()

 def pptx(self, filename):
  self.ppt(filename)

 def xls(self, filename):
  name = os.path.basename(filename).split('.')[0] + '.pdf'
  exportfile = os.path.join(self._export_folder, name)
  pythoncom.CoInitialize()
  xlApp = DispatchEx("Excel.Application")
  pythoncom.CoInitialize()
  xlApp.Visible = False
  xlApp.DisplayAlerts = 0
  books = xlApp.Workbooks.Open(filename, False)
  books.ExportAsFixedFormat(0, exportfile)
  books.Close(False)
  print('保存 PDF 文件：', exportfile)
  xlApp.Quit()

 def xlsx(self, filename):
  self.xls(filename)

if __name__ == "__main__":
 # 支持文件夹批量导入
 #folder = 'tmp'
 #pathname = os.path.join(os.path.abspath('.'), folder)
 # 也支持单个文件的转换
 pathname = "G:/python_study/test.doc"
 pdfCOnverter= PDFConverter(pathname)
 pdfConverter.run_conver()